[Java] Retrofit2 Play! Framework 2.6.x support (#901)

* added play framework 2.6 support

* generated petstore sample

* generated petstore sample #2

* generated petstore sample #3

* Revert "generated petstore sample #3"

* generated petstore sample #4

* fixed circleci configs

* one more time samples regen

CI/pom.xml.circleci

@@ -899,6 +899,7 @@
                 <module>samples/client/petstore/java/retrofit2</module>
                 <module>samples/client/petstore/java/retrofit2rx</module>
                 <module>samples/client/petstore/java/retrofit2-play25</module>
+                <module>samples/client/petstore/java/retrofit2-play26</module>
                 <module>samples/client/petstore/jaxrs-cxf-client</module>
                 <module>samples/client/petstore/java/resttemplate</module>
                 <module>samples/client/petstore/java/resttemplate-withXml</module>

bin/java-petstore-retrofit2-play26.json

@@ -0,0 +1 @@
+{"useBeanValidation":"true","enableBuilderSupport":"true","library":"retrofit2","usePlayWS":"true","playVersion":"play26"}

bin/java-petstore-retrofit2-play26.sh

@@ -0,0 +1,35 @@
+#!/bin/sh
+
+SCRIPT="$0"
+echo "# START SCRIPT: $SCRIPT"
+
+while [ -h "$SCRIPT" ] ; do
+  ls=`ls -ld "$SCRIPT"`
+  link=`expr "$ls" : '.*-> \(.*\)$'`
+  if expr "$link" : '/.*' > /dev/null; then
+    SCRIPT="$link"
+  else
+    SCRIPT=`dirname "$SCRIPT"`/"$link"
+  fi
+done
+
+if [ ! -d "${APP_DIR}" ]; then
+  APP_DIR=`dirname "$SCRIPT"`/..
+  APP_DIR=`cd "${APP_DIR}"; pwd`
+fi
+
+executable="./modules/openapi-generator-cli/target/openapi-generator-cli.jar"
+
+if [ ! -f "$executable" ]
+then
+  mvn -B clean package
+fi
+
+# if you've executed sbt assembly previously it will use that instead.
+export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
+ags="generate --artifact-id petstore-java-client-retrofit2-play26 -i modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-endpoints-models-for-testing.yaml -g java -c bin/java-petstore-retrofit2-play26.json -o samples/client/petstore/java/retrofit2-play26 -DhideGenerationTimestamp=true $@"
+
+echo "Removing files and folders under samples/client/petstore/java/retrofit2-play26/src/main"
+rm -rf samples/client/petstore/java/retrofit2-play26/src/main
+find samples/client/petstore/java/retrofit2-play26 -maxdepth 1 -type f ! -name "README.md" -exec rm {} +
+java $JAVA_OPTS -jar $executable $ags

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaClientCodegen.java

@@ -17,10 +17,6 @@
 
 package org.openapitools.codegen.languages;
 
-import static com.google.common.base.CaseFormat.LOWER_CAMEL;
-import static com.google.common.base.CaseFormat.UPPER_UNDERSCORE;
-import static java.util.Collections.sort;
-
 import org.apache.commons.lang3.BooleanUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.CliOption;
@@ -43,12 +39,14 @@ import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.HashMap;
 import java.util.Iterator;
-import java.util.LinkedHashMap;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
 import java.util.regex.Pattern;
 
+import static com.google.common.base.CaseFormat.LOWER_CAMEL;
+import static com.google.common.base.CaseFormat.UPPER_UNDERSCORE;
+import static java.util.Collections.sort;
+
 public class JavaClientCodegen extends AbstractJavaCodegen
         implements BeanValidationFeatures, PerformBeanValidationFeatures,
         GzipFeatures {
@@ -67,6 +65,7 @@ public class JavaClientCodegen extends AbstractJavaCodegen
 
     public static final String PLAY_24 = "play24";
     public static final String PLAY_25 = "play25";
+    public static final String PLAY_26 = "play26";
 
     public static final String FEIGN = "feign";
     public static final String GOOGLE_API_CLIENT = "google-api-client";
@@ -333,7 +332,9 @@ public class JavaClientCodegen extends AbstractJavaCodegen
                 supportingFiles.add(new SupportingFile("play24/Play24CallFactory.mustache", invokerFolder, "Play24CallFactory.java"));
                 supportingFiles.add(new SupportingFile("play24/Play24CallAdapterFactory.mustache", invokerFolder,
                         "Play24CallAdapterFactory.java"));
-            } else {
+            }
+
+            if (PLAY_25.equals(playVersion)) {
                 additionalProperties.put(PLAY_25, true);
                 apiTemplateFiles.put("play25/api.mustache", ".java");
 
@@ -344,6 +345,17 @@ public class JavaClientCodegen extends AbstractJavaCodegen
                 additionalProperties.put("java8", "true");
             }
 
+            if (PLAY_26.equals(playVersion)) {
+                additionalProperties.put(PLAY_26, true);
+                apiTemplateFiles.put("play26/api.mustache", ".java");
+
+                supportingFiles.add(new SupportingFile("play26/ApiClient.mustache", invokerFolder, "ApiClient.java"));
+                supportingFiles.add(new SupportingFile("play26/Play26CallFactory.mustache", invokerFolder, "Play26CallFactory.java"));
+                supportingFiles.add(new SupportingFile("play26/Play26CallAdapterFactory.mustache", invokerFolder,
+                        "Play26CallAdapterFactory.java"));
+                additionalProperties.put("java8", "true");
+            }
+
             supportingFiles.add(new SupportingFile("play-common/auth/ApiKeyAuth.mustache", authFolder, "ApiKeyAuth.java"));
             supportingFiles.add(new SupportingFile("auth/Authentication.mustache", authFolder, "Authentication.java"));
             supportingFiles.add(new SupportingFile("Pair.mustache", invokerFolder, "Pair.java"));

modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/build.gradle.mustache

@@ -129,6 +129,10 @@ ext {
     jackson_version = "2.7.8"
     play_version = "2.5.14"
     {{/play25}}
+    {{#play26}}
+    jackson_version = "2.8.10"
+    play_version = "2.6.7"
+    {{/play26}}
     {{/usePlayWS}}
     swagger_annotations_version = "1.5.17"
     junit_version = "4.12"
@@ -171,7 +175,13 @@ dependencies {
     compile "org.threeten:threetenbp:$threetenbp_version"
     {{/threetenbp}}
     {{#usePlayWS}}
+    {{#play26}}
+    compile "com.typesafe.play:play-ahc-ws_2.12:$play_version"
+    compile "javax.validation:validation-api:1.1.0.Final"
+    {{/play26}}
+    {{^play26}}
     compile "com.typesafe.play:play-java-ws_2.11:$play_version"
+    {{/play26}}
     compile "com.squareup.retrofit2:converter-jackson:$retrofit_version"
     compile "com.fasterxml.jackson.core:jackson-core:$jackson_version"
     compile "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"

modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/build.sbt.mustache

@@ -27,6 +27,13 @@ lazy val root = (project in file(".")).
       "com.fasterxml.jackson.core" % "jackson-annotations" % "2.7.8" % "compile",
       "com.fasterxml.jackson.core" % "jackson-databind" % "2.7.8" % "compile",
       {{/play25}}
+      {{#play26}}
+      "com.typesafe.play" % "play-ahc-ws_2.12" % "2.6.7" % "compile",
+      "javax.validation" % "validation-api" % "1.1.0.Final" % "compile",
+      "com.fasterxml.jackson.core" % "jackson-core" % "2.8.10" % "compile",
+      "com.fasterxml.jackson.core" % "jackson-annotations" % "2.8.10" % "compile",
+      "com.fasterxml.jackson.core" % "jackson-databind" % "2.8.10" % "compile",
+      {{/play26}}
       "com.squareup.retrofit2" % "converter-jackson" % "2.3.0" % "compile",
       {{/usePlayWS}}
       {{#useRxJava}}

modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/play26/ApiClient.mustache

@@ -0,0 +1,205 @@
+package {{invokerPackage}};
+
+import java.io.File;
+import java.io.IOException;
+import java.lang.annotation.Annotation;
+import java.lang.reflect.Type;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.*;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import retrofit2.Converter;
+import retrofit2.Retrofit;
+import retrofit2.converter.scalars.ScalarsConverterFactory;
+import retrofit2.converter.jackson.JacksonConverterFactory;
+
+import play.libs.Json;
+import play.libs.ws.WSClient;
+
+import {{invokerPackage}}.Play26CallAdapterFactory;
+import {{invokerPackage}}.Play26CallFactory;
+
+import okhttp3.Interceptor;
+import okhttp3.ResponseBody;
+import {{invokerPackage}}.auth.ApiKeyAuth;
+import {{invokerPackage}}.auth.Authentication;
+
+/**
+ * API client
+ */
+public class ApiClient {
+
+    /** Underlying HTTP-client */
+    private WSClient wsClient;
+
+    /** Creates HTTP call instances */
+    private Play26CallFactory callFactory;
+
+    /** Create {@link java.util.concurrent.CompletionStage} instances from HTTP calls */
+    private Play26CallAdapterFactory callAdapterFactory;
+
+    /** Supported auths */
+    private Map<String, Authentication> authentications;
+
+    /** API base path */
+    private String basePath = "{{{basePath}}}";
+
+    /** Default ObjectMapper */
+    private ObjectMapper defaultMapper;
+
+    public ApiClient(WSClient wsClient) {
+        this();
+        this.wsClient = wsClient;
+    }
+
+    public ApiClient() {
+        // Setup authentications (key: authentication name, value: authentication).
+        authentications = new HashMap<>();{{#authMethods}}{{#isBasic}}
+        // authentications.put("{{name}}", new HttpBasicAuth());{{/isBasic}}{{#isApiKey}}
+        authentications.put("{{name}}", new ApiKeyAuth({{#isKeyInHeader}}"header"{{/isKeyInHeader}}{{^isKeyInHeader}}"query"{{/isKeyInHeader}}, "{{keyParamName}}"));{{/isApiKey}}{{#isOAuth}}
+        // authentications.put("{{name}}", new OAuth());{{/isOAuth}}{{/authMethods}}
+        // Prevent the authentications from being modified.
+        authentications = Collections.unmodifiableMap(authentications);
+    }
+
+    /**
+     * Creates a retrofit2 client for given API interface
+     */
+    public <S> S createService(Class<S> serviceClass) {
+        if(!basePath.endsWith("/")) {
+            basePath = basePath + "/";
+        }
+
+        Map<String, String> extraHeaders = new HashMap<>();
+        List<Pair> extraQueryParams = new ArrayList<>();
+
+        for (String authName : authentications.keySet()) {
+            Authentication auth = authentications.get(authName);
+            if (auth == null) throw new RuntimeException("Authentication undefined: " + authName);
+
+            auth.applyToParams(extraQueryParams, extraHeaders);
+        }
+
+        if (callFactory == null) {
+            callFactory = new Play26CallFactory(wsClient, extraHeaders, extraQueryParams);
+        }
+        if (callAdapterFactory == null) {
+            callAdapterFactory = new Play26CallAdapterFactory();
+        }
+        if (defaultMapper == null) {
+            defaultMapper = Json.mapper();
+        }
+
+        return new Retrofit.Builder()
+                        .baseUrl(basePath)
+                        .addConverterFactory(new FileConverter())
+                        .addConverterFactory(ScalarsConverterFactory.create())
+                        .addConverterFactory(JacksonConverterFactory.create(defaultMapper))
+                        .callFactory(callFactory)
+                        .addCallAdapterFactory(callAdapterFactory)
+                        .build()
+                        .create(serviceClass);
+    }
+
+    /**
+     * Helper method to set API base path
+     */
+    public ApiClient setBasePath(String basePath) {
+        this.basePath = basePath;
+        return this;
+    }
+
+    /**
+     * Get authentications (key: authentication name, value: authentication).
+     */
+    public Map<String, Authentication> getAuthentications() {
+        return authentications;
+    }
+
+    /**
+     * Get authentication for the given name.
+     *
+     * @param authName The authentication name
+     * @return The authentication, null if not found
+     */
+    public Authentication getAuthentication(String authName) {
+        return authentications.get(authName);
+    }
+
+    /**
+     * Helper method to set API key value for the first API key authentication.
+     */
+    public ApiClient setApiKey(String apiKey) {
+        for (Authentication auth : authentications.values()) {
+            if (auth instanceof ApiKeyAuth) {
+                ((ApiKeyAuth) auth).setApiKey(apiKey);
+                return this;
+            }
+        }
+
+        throw new RuntimeException("No API key authentication configured!");
+    }
+
+    /**
+     * Helper method to set API key prefix for the first API key authentication.
+     */
+    public ApiClient setApiKeyPrefix(String apiKeyPrefix) {
+        for (Authentication auth : authentications.values()) {
+            if (auth instanceof ApiKeyAuth) {
+                ((ApiKeyAuth) auth).setApiKeyPrefix(apiKeyPrefix);
+                return this;
+            }
+        }
+
+        throw new RuntimeException("No API key authentication configured!");
+    }
+
+    /**
+     * Helper method to set HTTP call instances factory
+     */
+    public ApiClient setCallFactory(Play26CallFactory callFactory) {
+        this.callFactory = callFactory;
+        return this;
+    }
+
+    /**
+     * Helper method to set {@link java.util.concurrent.CompletionStage} instances factory
+     */
+    public ApiClient setCallAdapterFactory(Play26CallAdapterFactory callAdapterFactory) {
+        this.callAdapterFactory = callAdapterFactory;
+        return this;
+    }
+
+    /**
+     * Helper method to set Jackson's {@link ObjectMapper}
+     */
+    public ApiClient setObjectMapper(ObjectMapper mapper) {
+        this.defaultMapper = mapper;
+        return this;
+    }
+
+    static class FileConverter extends Converter.Factory {
+
+        @Override
+        public Converter<ResponseBody, File> responseBodyConverter(Type type,
+                Annotation[] annotations, Retrofit retrofit) {
+
+            if (!File.class.getTypeName().equals(type.getTypeName())) {
+                return null;
+            }
+
+            return new Converter<ResponseBody, File>() {
+
+                @Override
+                public File convert(ResponseBody value) throws IOException {
+
+                    File file = File.createTempFile("retrofit-file", ".tmp");
+                    Files.write(Paths.get(file.getPath()), value.bytes());
+                    return file;
+                }
+            };
+        }
+    }
+
+}

modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/play26/Play26CallAdapterFactory.mustache

@@ -0,0 +1,116 @@
+package {{invokerPackage}};
+
+import java.util.concurrent.CompletionStage;
+import retrofit2.*;
+
+import java.lang.annotation.Annotation;
+import java.lang.reflect.ParameterizedType;
+import java.lang.reflect.Type;
+import java.lang.reflect.WildcardType;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionStage;
+import java.util.function.Function;
+
+/**
+ * Creates {@link CallAdapter} instances that convert {@link Call} into {@link java.util.concurrent.CompletionStage}
+ */
+public class Play26CallAdapterFactory extends CallAdapter.Factory {
+
+    private Function<RuntimeException, RuntimeException> exceptionConverter = Function.identity();
+
+    public Play26CallAdapterFactory() {
+    }
+
+    public Play26CallAdapterFactory(
+            Function<RuntimeException, RuntimeException> exceptionConverter) {
+        this.exceptionConverter = exceptionConverter;
+    }
+
+    @Override
+    public CallAdapter<?, ?> get(Type returnType, Annotation[] annotations, Retrofit retrofit) {
+        if (!(returnType instanceof ParameterizedType)) {
+            return null;
+        }
+
+        ParameterizedType type = (ParameterizedType) returnType;
+        if (type.getRawType() != CompletionStage.class) {
+            return null;
+        }
+
+        return createAdapter((ParameterizedType) returnType);
+    }
+
+    private CallAdapter<?, CompletionStage<?>> createAdapter(ParameterizedType returnType) {
+        // Get CompletionStage type argument
+        Type[] types = returnType.getActualTypeArguments();
+        if (types.length != 1) {
+            throw new IllegalStateException("Must be exactly one type parameter");
+        }
+
+        Type resultType = types[0];
+        Class<?> rawTypeParam = getRawType(resultType);
+
+        boolean includeResponse = false;
+        if (rawTypeParam == Response.class) {
+            if (!(resultType instanceof ParameterizedType)) {
+                throw new IllegalStateException("Response must be parameterized"
+                        + " as Response<T>");
+            }
+            resultType = ((ParameterizedType) resultType).getActualTypeArguments()[0];
+            includeResponse = true;
+        }
+
+        return new ValueAdapter(resultType, includeResponse, exceptionConverter);
+    }
+
+    /**
+     * Adpater that coverts values returned by API interface into CompletionStage
+     */
+    private static final class ValueAdapter<R> implements CallAdapter<R, CompletionStage<R>> {
+
+        private final Type responseType;
+        private final boolean includeResponse;
+        private Function<RuntimeException, RuntimeException> exceptionConverter;
+
+        ValueAdapter(Type responseType, boolean includeResponse,
+                     Function<RuntimeException, RuntimeException> exceptionConverter) {
+            this.responseType = responseType;
+            this.includeResponse = includeResponse;
+            this.exceptionConverter = exceptionConverter;
+        }
+
+        @Override
+        public Type responseType() {
+            return responseType;
+        }
+
+        @Override
+        public CompletionStage<R> adapt(final Call<R> call) {
+            final CompletableFuture<R> promise = new CompletableFuture();
+
+            call.enqueue(new Callback<R>() {
+
+                @Override
+                public void onResponse(Call<R> call, Response<R> response) {
+                    if (response.isSuccessful()) {
+                        if (includeResponse) {
+                            promise.complete((R) response);
+                        } else {
+                            promise.complete(response.body());
+                        }
+                    } else {
+                        promise.completeExceptionally(exceptionConverter.apply(new HttpException(response)));
+                    }
+                }
+
+                @Override
+                public void onFailure(Call<R> call, Throwable t) {
+                    promise.completeExceptionally(t);
+                }
+
+            });
+
+            return promise;
+        }
+    }
+}

modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/play26/Play26CallFactory.mustache

@@ -0,0 +1,245 @@
+package {{invokerPackage}};
+
+import okhttp3.*;
+import okio.Buffer;
+import okio.BufferedSource;
+import play.libs.ws.WSClient;
+import play.libs.ws.WSRequest;
+import play.libs.ws.WSResponse;
+import play.libs.ws.WSRequestFilter;
+
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.CompletionStage;
+import java.util.concurrent.Executor;
+
+/**
+ * Creates {@link Call} instances that invoke underlying {@link WSClient}
+ */
+public class Play26CallFactory implements okhttp3.Call.Factory {
+
+    /** PlayWS http client */
+    private final WSClient wsClient;
+
+    /** Extra headers to add to request */
+    private Map<String, String> extraHeaders = new HashMap<>();
+
+    /** Extra query parameters to add to request */
+    private List<Pair> extraQueryParams = new ArrayList<>();
+
+    /** Filters (interceptors) */
+    private List<WSRequestFilter> filters = new ArrayList<>();
+
+    /** Executor for WSClient */
+    private Executor executor;
+
+    public Play26CallFactory(WSClient wsClient) {
+        this.wsClient = wsClient;
+    }
+
+    public Play26CallFactory(WSClient wsClient, List<WSRequestFilter> filters) {
+        this.wsClient = wsClient;
+        this.filters.addAll(filters);
+    }
+
+    public Play26CallFactory(WSClient wsClient, Map<String, String> extraHeaders,
+        List<Pair> extraQueryParams) {
+        this.wsClient = wsClient;
+
+        this.extraHeaders.putAll(extraHeaders);
+        this.extraQueryParams.addAll(extraQueryParams);
+    }
+
+    public Play26CallFactory withExecutor(Executor executor) {
+        this.executor = executor;
+        return this;
+    }
+
+    @Override
+    public Call newCall(Request request) {
+        // add extra headers
+        Request.Builder rb = request.newBuilder();
+        for (Map.Entry<String, String> header : this.extraHeaders.entrySet()) {
+            rb.addHeader(header.getKey(), header.getValue());
+        }
+
+        // add extra query params
+        if (!this.extraQueryParams.isEmpty()) {
+            String newQuery = request.url().uri().getQuery();
+            for (Pair queryParam : this.extraQueryParams) {
+                String param = String.format("%s=%s", queryParam.getName(), queryParam.getValue());
+                if (newQuery == null) {
+                    newQuery = param;
+                } else {
+                    newQuery += "&" + param;
+                }
+            }
+
+            URI newUri;
+            try {
+                newUri = new URI(request.url().uri().getScheme(), request.url().uri().getAuthority(),
+                        request.url().uri().getPath(), newQuery, request.url().uri().getFragment());
+                rb.url(newUri.toURL());
+            } catch (MalformedURLException | URISyntaxException e) {
+                throw new RuntimeException("Error while updating an url", e);
+            }
+        }
+
+        return new PlayWSCall(wsClient, this.executor, this.filters, rb.build());
+    }
+
+    /**
+     * Call implementation that delegates to Play WS Client
+     */
+    static class PlayWSCall implements Call {
+
+        private final WSClient wsClient;
+        private WSRequest wsRequest;
+        private List<WSRequestFilter> filters;
+        private Executor executor = java.util.concurrent.ForkJoinPool.commonPool();
+
+        private final Request request;
+
+        public PlayWSCall(WSClient wsClient, Executor executor, List<WSRequestFilter> filters, Request request) {
+            this.wsClient = wsClient;
+            this.request = request;
+            this.filters = filters;
+
+            if (executor != null) {
+                this.executor = executor;
+            }
+        }
+
+        @Override
+        public Request request() {
+            return request;
+        }
+
+        @Override
+        public void enqueue(final okhttp3.Callback responseCallback) {
+            final Call call = this;
+            final CompletionStage<WSResponse> promise = executeAsync();
+
+            promise.whenCompleteAsync((v, t) -> {
+                if (t != null) {
+                    if (t instanceof IOException) {
+                        responseCallback.onFailure(call, (IOException) t);
+                    } else {
+                        responseCallback.onFailure(call, new IOException(t));
+                    }
+                } else {
+                    try {
+                        responseCallback.onResponse(call, PlayWSCall.this.toWSResponse(v));
+                    } catch (Exception e) {
+                        responseCallback.onFailure(call, new IOException(e));
+                    }
+                }
+            }, this.executor);
+        }
+
+        CompletionStage<WSResponse> executeAsync() {
+            try {
+                HttpUrl url = request.url();
+                wsRequest = wsClient.url(url.scheme()+ "://" + url.host() + ":" + url.port() + url.encodedPath());
+                url.queryParameterNames().forEach(queryParam -> {
+                    wsRequest.addQueryParameter(queryParam, url.queryParameter(queryParam));
+                });
+                addHeaders(wsRequest);
+                if (request.body() != null) {
+                    addBody(wsRequest);
+                }
+                filters.stream().forEach(f -> wsRequest.setRequestFilter(f));
+
+                return wsRequest.execute(request.method());
+            } catch (Exception e) {
+                throw new RuntimeException(e.getMessage(), e);
+            }
+        }
+
+        private void addHeaders(WSRequest wsRequest) {
+            for(Map.Entry<String, List<String>> entry : request.headers().toMultimap().entrySet()) {
+                List<String> values = entry.getValue();
+                for (String value : values) {
+                    wsRequest.setHeader(entry.getKey(), value);
+                }
+            }
+        }
+
+        private void addBody(WSRequest wsRequest) throws IOException {
+            MediaType mediaType = request.body().contentType();
+            if (mediaType != null) {
+                wsRequest.setContentType(mediaType.toString());
+            }
+
+            Buffer buffer = new Buffer();
+            request.body().writeTo(buffer);
+            wsRequest.setBody(buffer.inputStream());
+        }
+
+        private Response toWSResponse(final WSResponse r) {
+            final Response.Builder builder = new Response.Builder();
+            builder.request(request)
+                   .code(r.getStatus())
+                   .body(new ResponseBody() {
+
+                       @Override
+                       public MediaType contentType() {
+                          return r.getSingleHeader("Content-Type")
+                                  .map(MediaType::parse)
+                                  .orElse(null);
+                       }
+
+                       @Override
+                       public long contentLength() {
+                           return r.asByteArray().length;
+                       }
+
+                       @Override
+                       public BufferedSource source() {
+                           return new Buffer().write(r.asByteArray());
+                       }
+                   });
+
+            for (Map.Entry<String, List<String>> entry : r.getAllHeaders().entrySet()) {
+                for (String value : entry.getValue()) {
+                    builder.addHeader(entry.getKey(), value);
+                }
+            }
+
+            builder.message(r.getStatusText());
+            builder.protocol(Protocol.HTTP_1_1);
+            return builder.build();
+        }
+
+        @Override
+        public Response execute() throws IOException {
+            throw new UnsupportedOperationException("Not supported");
+        }
+
+        @Override
+        public void cancel() {
+            throw new UnsupportedOperationException("Not supported");
+        }
+
+        @Override
+        public PlayWSCall clone() {
+            throw new UnsupportedOperationException("Not supported");
+        }
+
+        @Override
+        public boolean isExecuted() {
+            return false;
+        }
+
+        @Override
+        public boolean isCanceled() {
+            return false;
+        }
+    }
+}

modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/play26/api.mustache

@@ -0,0 +1,59 @@
+package {{package}};
+
+import {{invokerPackage}}.CollectionFormats.*;
+
+{{#useRxJava}}import rx.Observable;{{/useRxJava}}
+{{#useRxJava2}}import io.reactivex.Observable;{{/useRxJava2}}
+{{#doNotUseRx}}import retrofit2.Call;{{/doNotUseRx}}
+import retrofit2.http.*;
+
+import okhttp3.RequestBody;
+import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;
+
+{{#imports}}import {{import}};
+{{/imports}}
+
+{{^fullJavaUtil}}
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+{{/fullJavaUtil}}
+
+import java.util.concurrent.*;
+import retrofit2.Response;
+
+{{#operations}}
+public interface {{classname}} {
+  {{#operation}}
+  /**
+   * {{summary}}
+   * {{notes}}
+{{#allParams}}
+   * @param {{paramName}} {{description}}{{#required}} (required){{/required}}{{^required}} (optional{{#defaultValue}}, default to {{.}}{{/defaultValue}}){{/required}}
+{{/allParams}}
+   * @return Call<{{#returnType}}{{returnType}}{{/returnType}}{{^returnType}}Void{{/returnType}}>
+   */
+  {{#formParams}}
+  {{#-first}}
+  {{#isMultipart}}@retrofit2.http.Multipart{{/isMultipart}}{{^isMultipart}}@retrofit2.http.FormUrlEncoded{{/isMultipart}}
+  {{/-first}}
+  {{/formParams}}
+  {{^formParams}}
+  {{#prioritizedContentTypes}}
+  {{#-first}}
+  @Headers({
+    "Content-Type:{{{mediaType}}}"
+  })
+  {{/-first}}
+  {{/prioritizedContentTypes}}
+  {{/formParams}}
+  @{{httpMethod}}("{{{path}}}")
+  CompletionStage<Response<{{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}Void{{/returnType}}>> {{operationId}}({{^allParams}});{{/allParams}}
+    {{#allParams}}{{>libraries/retrofit2/queryParams}}{{>libraries/retrofit2/pathParams}}{{>libraries/retrofit2/headerParams}}{{>libraries/retrofit2/bodyParams}}{{>libraries/retrofit2/formParams}}{{#hasMore}}, {{/hasMore}}{{^hasMore}}
+  );{{/hasMore}}{{/allParams}}
+
+  {{/operation}}
+}
+{{/operations}}

modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/pom.mustache

@@ -300,11 +300,34 @@
                 </dependency>
 
             {{/withXml}}
+
+            {{#play24}}
             <dependency>
                 <groupId>com.typesafe.play</groupId>
                 <artifactId>play-java-ws_2.11</artifactId>
                 <version>${play-version}</version>
             </dependency>
+            {{/play24}}
+            {{#play25}}
+            <dependency>
+                <groupId>com.typesafe.play</groupId>
+                <artifactId>play-java-ws_2.11</artifactId>
+                <version>${play-version}</version>
+            </dependency>
+            {{/play25}}
+            {{#play26}}
+            <dependency>
+                <groupId>com.typesafe.play</groupId>
+                <artifactId>play-ahc-ws_2.12</artifactId>
+                <version>${play-version}</version>
+            </dependency>
+            <dependency>
+                <groupId>javax.validation</groupId>
+                <artifactId>validation-api</artifactId>
+                <version>1.1.0.Final</version>
+            </dependency>
+            {{/play26}}
+
         {{/usePlayWS}}
 
         {{#parcelableModel}}
@@ -341,6 +364,10 @@
                 <jackson-version>2.7.8</jackson-version>
                 <play-version>2.5.15</play-version>
             {{/play25}}
+            {{#play26}}
+                <jackson-version>2.8.10</jackson-version>
+                <play-version>2.6.7</play-version>
+            {{/play26}}
         {{/usePlayWS}}
         <retrofit-version>2.3.0</retrofit-version>
         {{#useRxJava}}

samples/client/petstore-security-test/java/okhttp-gson/.openapi-generator/VERSION

@@ -1 +1 @@
-3.0.0-SNAPSHOT
+3.2.3-SNAPSHOT

samples/client/petstore-security-test/java/okhttp-gson/docs/FakeApi.md

@@ -1,6 +1,6 @@
 # FakeApi
 
-All URIs are relative to *petstore.swagger.io *_/ ' \" =end -- \\r\\n \\n \\r/v2 *_/ ' \" =end -- \\r\\n \\n \\r*
+All URIs are relative to *http://petstore.swagger.io *_/ ' \" =end -- \\r\\n \\n \\r/v2 *_/ ' \" =end -- \\r\\n \\n \\r*
 
 Method | HTTP request | Description
 ------------- | ------------- | -------------
@@ -13,6 +13,8 @@ Method | HTTP request | Description
 
 To test code injection *_/ ' \" =end -- \\r\\n \\n \\r
 
+To test code injection *_/ ' \" =end -- \\r\\n \\n \\r
+
 ### Example
 ```java
 // Import classes:
@@ -21,7 +23,7 @@ To test code injection *_/ ' \" =end -- \\r\\n \\n \\r
 
 
 FakeApi apiInstance = new FakeApi();
-Object UNKNOWN_BASE_TYPE = new UNKNOWN_BASE_TYPE(); // Object | 
+UNKNOWN_BASE_TYPE UNKNOWN_BASE_TYPE = new UNKNOWN_BASE_TYPE(); // UNKNOWN_BASE_TYPE | 
 try {
     apiInstance.testCodeInjectEndRnNR(UNKNOWN_BASE_TYPE);
 } catch (ApiException e) {
@@ -34,7 +36,7 @@ try {
 
 Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
- **UNKNOWN_BASE_TYPE** | [**Object**](UNKNOWN_BASE_TYPE.md)|  | [optional]
+ **UNKNOWN_BASE_TYPE** | [**UNKNOWN_BASE_TYPE**](UNKNOWN_BASE_TYPE.md)|  | [optional]
 
 ### Return type
 

samples/client/petstore-security-test/java/okhttp-gson/src/main/java/org/openapitools/client/ApiClient.java

@@ -52,7 +52,7 @@ import org.openapitools.client.auth.OAuth;
 
 public class ApiClient {
 
-    private String basePath = "petstore.swagger.io *_/ ' \" =end -- \\r\\n \\n \\r/v2 *_/ ' \" =end -- \\r\\n \\n \\r";
+    private String basePath = "http://petstore.swagger.io *_/ ' \" =end -- \\r\\n \\n \\r/v2 *_/ ' \" =end -- \\r\\n \\n \\r";
     private boolean debugging = false;
     private Map<String, String> defaultHeaderMap = new HashMap<String, String>();
     private String tempFolderPath = null;
@@ -107,7 +107,7 @@ public class ApiClient {
     /**
      * Set base path
      *
-     * @param basePath Base path of the URL (e.g petstore.swagger.io *_/ ' \" =end -- \\r\\n \\n \\r/v2 *_/ ' \" =end -- \\r\\n \\n \\r
+     * @param basePath Base path of the URL (e.g http://petstore.swagger.io *_/ ' \" =end -- \\r\\n \\n \\r/v2 *_/ ' \" =end -- \\r\\n \\n \\r
      * @return An instance of OkHttpClient
      */
     public ApiClient setBasePath(String basePath) {
@@ -895,7 +895,7 @@ public class ApiClient {
      * @param <T> Type
      * @param response Response
      * @param returnType Return type
-     * @throws ApiException If the response has a unsuccessful status code or
+     * @throws ApiException If the response has an unsuccessful status code or
      *   fail to deserialize the response body
      * @return Type
      */

samples/client/petstore-security-test/java/okhttp-gson/src/main/java/org/openapitools/client/JSON.java

@@ -1,6 +1,6 @@
 /*
  * OpenAPI Petstore *_/ ' \" =end -- \\r\\n \\n \\r
- * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  *_/ ' \" =end --       
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  *_/ ' \" =end --
  *
  * OpenAPI spec version: 1.0.0 *_/ ' \" =end -- \\r\\n \\n \\r
  * Contact: something@something.abc *_/ ' \" =end -- \\r\\n \\n \\r
@@ -15,21 +15,19 @@ package org.openapitools.client;
 
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
+import com.google.gson.JsonElement;
 import com.google.gson.JsonParseException;
 import com.google.gson.TypeAdapter;
 import com.google.gson.internal.bind.util.ISO8601Utils;
 import com.google.gson.stream.JsonReader;
 import com.google.gson.stream.JsonWriter;
-import com.google.gson.JsonElement;
 import io.gsonfire.GsonFireBuilder;
-import io.gsonfire.TypeSelector;
+import okio.ByteString;
+import org.openapitools.client.model.*;
 import org.threeten.bp.LocalDate;
 import org.threeten.bp.OffsetDateTime;
 import org.threeten.bp.format.DateTimeFormatter;
 
-import org.openapitools.client.model.*;
-import okio.ByteString;
-
 import java.io.IOException;
 import java.io.StringReader;
 import java.lang.reflect.Type;
@@ -37,8 +35,8 @@ import java.text.DateFormat;
 import java.text.ParseException;
 import java.text.ParsePosition;
 import java.util.Date;
+import java.util.Locale;
 import java.util.Map;
-import java.util.HashMap;
 
 public class JSON {
     private Gson gson;
@@ -51,8 +49,10 @@ public class JSON {
 
     public static GsonBuilder createGson() {
         GsonFireBuilder fireBuilder = new GsonFireBuilder()
+
         ;
-        return fireBuilder.createGsonBuilder();
+        GsonBuilder builder = fireBuilder.createGsonBuilder();
+        return builder;
     }
 
     private static String getDiscriminatorValue(JsonElement readElement, String discriminatorField) {
@@ -64,7 +64,7 @@ public class JSON {
     }
 
     private static Class getClassByDiscriminator(Map classByDiscriminatorValue, String discriminatorValue) {
-        Class clazz = (Class) classByDiscriminatorValue.get(discriminatorValue.toUpperCase());
+        Class clazz = (Class) classByDiscriminatorValue.get(discriminatorValue.toUpperCase(Locale.ROOT));
         if(null == clazz) {
             throw new IllegalArgumentException("cannot determine model class of name: <" + discriminatorValue + ">");
         }

samples/client/petstore-security-test/java/okhttp-gson/src/main/java/org/openapitools/client/api/FakeApi.java

@@ -27,6 +27,7 @@ import com.google.gson.reflect.TypeToken;
 import java.io.IOException;
 
 
+import org.openapitools.client.model.UNKNOWN_BASE_TYPE;
 
 import java.lang.reflect.Type;
 import java.util.ArrayList;
@@ -61,7 +62,7 @@ public class FakeApi {
      * @return Call to execute
      * @throws ApiException If fail to serialize the request body object
      */
-    public com.squareup.okhttp.Call testCodeInjectEndRnNRCall(Object UNKNOWN_BASE_TYPE, final ProgressResponseBody.ProgressListener progressListener, final ProgressRequestBody.ProgressRequestListener progressRequestListener) throws ApiException {
+    public com.squareup.okhttp.Call testCodeInjectEndRnNRCall(UNKNOWN_BASE_TYPE UNKNOWN_BASE_TYPE, final ProgressResponseBody.ProgressListener progressListener, final ProgressRequestBody.ProgressRequestListener progressRequestListener) throws ApiException {
         Object localVarPostBody = UNKNOWN_BASE_TYPE;
 
         // create path and map variables
@@ -103,7 +104,7 @@ public class FakeApi {
     }
 
     @SuppressWarnings("rawtypes")
-    private com.squareup.okhttp.Call testCodeInjectEndRnNRValidateBeforeCall(Object UNKNOWN_BASE_TYPE, final ProgressResponseBody.ProgressListener progressListener, final ProgressRequestBody.ProgressRequestListener progressRequestListener) throws ApiException {
+    private com.squareup.okhttp.Call testCodeInjectEndRnNRValidateBeforeCall(UNKNOWN_BASE_TYPE UNKNOWN_BASE_TYPE, final ProgressResponseBody.ProgressListener progressListener, final ProgressRequestBody.ProgressRequestListener progressRequestListener) throws ApiException {
         
 
         com.squareup.okhttp.Call call = testCodeInjectEndRnNRCall(UNKNOWN_BASE_TYPE, progressListener, progressRequestListener);
@@ -113,35 +114,35 @@ public class FakeApi {
 
     /**
      * To test code injection *_/ ' \" =end -- \\r\\n \\n \\r
-     * 
+     * To test code injection *_/ ' \" =end -- \\r\\n \\n \\r
      * @param UNKNOWN_BASE_TYPE  (optional)
      * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
      */
-    public void testCodeInjectEndRnNR(Object UNKNOWN_BASE_TYPE) throws ApiException {
+    public void testCodeInjectEndRnNR(UNKNOWN_BASE_TYPE UNKNOWN_BASE_TYPE) throws ApiException {
         testCodeInjectEndRnNRWithHttpInfo(UNKNOWN_BASE_TYPE);
     }
 
     /**
      * To test code injection *_/ ' \" =end -- \\r\\n \\n \\r
-     * 
+     * To test code injection *_/ ' \" =end -- \\r\\n \\n \\r
      * @param UNKNOWN_BASE_TYPE  (optional)
      * @return ApiResponse<Void>
      * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
      */
-    public ApiResponse<Void> testCodeInjectEndRnNRWithHttpInfo(Object UNKNOWN_BASE_TYPE) throws ApiException {
+    public ApiResponse<Void> testCodeInjectEndRnNRWithHttpInfo(UNKNOWN_BASE_TYPE UNKNOWN_BASE_TYPE) throws ApiException {
         com.squareup.okhttp.Call call = testCodeInjectEndRnNRValidateBeforeCall(UNKNOWN_BASE_TYPE, null, null);
         return apiClient.execute(call);
     }
 
     /**
      * To test code injection *_/ &#39; \&quot; &#x3D;end -- \\r\\n \\n \\r (asynchronously)
-     * 
+     * To test code injection *_/ &#39; \&quot; &#x3D;end -- \\r\\n \\n \\r
      * @param UNKNOWN_BASE_TYPE  (optional)
      * @param callback The callback to be executed when the API call finishes
      * @return The request call
      * @throws ApiException If fail to process the API call, e.g. serializing the request body object
      */
-    public com.squareup.okhttp.Call testCodeInjectEndRnNRAsync(Object UNKNOWN_BASE_TYPE, final ApiCallback<Void> callback) throws ApiException {
+    public com.squareup.okhttp.Call testCodeInjectEndRnNRAsync(UNKNOWN_BASE_TYPE UNKNOWN_BASE_TYPE, final ApiCallback<Void> callback) throws ApiException {
 
         ProgressResponseBody.ProgressListener progressListener = null;
         ProgressRequestBody.ProgressRequestListener progressRequestListener = null;

samples/client/petstore-security-test/java/okhttp-gson/src/main/java/org/openapitools/client/model/ModelReturn.java

@@ -1,6 +1,6 @@
 /*
  * OpenAPI Petstore *_/ ' \" =end -- \\r\\n \\n \\r
- * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  *_/ ' \" =end --       
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  *_/ ' \" =end --
  *
  * OpenAPI spec version: 1.0.0 *_/ ' \" =end -- \\r\\n \\n \\r
  * Contact: something@something.abc *_/ ' \" =end -- \\r\\n \\n \\r
@@ -13,16 +13,11 @@
 
 package org.openapitools.client.model;
 
-import java.util.Objects;
-import java.util.Arrays;
-import com.google.gson.TypeAdapter;
-import com.google.gson.annotations.JsonAdapter;
 import com.google.gson.annotations.SerializedName;
-import com.google.gson.stream.JsonReader;
-import com.google.gson.stream.JsonWriter;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
-import java.io.IOException;
+
+import java.util.Objects;
 
 /**
  * Model for testing reserved words  *_/ ' \" =end -- \\r\\n \\n \\r
@@ -30,7 +25,8 @@ import java.io.IOException;
 @ApiModel(description = "Model for testing reserved words  *_/ ' \" =end -- \\r\\n \\n \\r")
 
 public class ModelReturn {
-  @SerializedName("return")
+  public static final String SERIALIZED_NAME_RETURN = "return";
+  @SerializedName(SERIALIZED_NAME_RETURN)
   private Integer _return = null;
 
   public ModelReturn _return(Integer _return) {
@@ -74,7 +70,7 @@ public class ModelReturn {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
+
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();

samples/client/petstore/java/retrofit2-play24/pom.xml

@@ -251,6 +251,7 @@
                 <artifactId>jackson-datatype-jsr310</artifactId>
                 <version>${jackson-version}</version>
             </dependency>
+
             <dependency>
                 <groupId>com.typesafe.play</groupId>
                 <artifactId>play-java-ws_2.11</artifactId>
@@ -258,6 +259,7 @@
             </dependency>
 
 
+
         <!-- test dependencies -->
         <dependency>
             <groupId>junit</groupId>

samples/client/petstore/java/retrofit2-play25/pom.xml

@@ -256,6 +256,7 @@
                 <artifactId>jackson-datatype-jsr310</artifactId>
                 <version>${jackson-version}</version>
             </dependency>
+
             <dependency>
                 <groupId>com.typesafe.play</groupId>
                 <artifactId>play-java-ws_2.11</artifactId>
@@ -263,6 +264,7 @@
             </dependency>
 
 
+
         <!-- test dependencies -->
         <dependency>
             <groupId>junit</groupId>

samples/client/petstore/java/retrofit2-play26/.gitignore

@@ -0,0 +1,21 @@
+*.class
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.ear
+
+# exclude jar for gradle wrapper
+!gradle/wrapper/*.jar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+# build files
+**/target
+target
+.gradle
+build

samples/client/petstore/java/retrofit2-play26/.openapi-generator-ignore

@@ -0,0 +1,23 @@
+# OpenAPI Generator Ignore
+# Generated by openapi-generator https://github.com/openapitools/openapi-generator
+
+# Use this file to prevent files from being overwritten by the generator.
+# The patterns follow closely to .gitignore or .dockerignore.
+
+# As an example, the C# client generator defines ApiClient.cs.
+# You can make changes and tell OpenAPI Generator to ignore just this file by uncommenting the following line:
+#ApiClient.cs
+
+# You can match any string of characters against a directory, file or extension with a single asterisk (*):
+#foo/*/qux
+# The above matches foo/bar/qux and foo/baz/qux, but not foo/bar/baz/qux
+
+# You can recursively match patterns against a directory, file or extension with a double asterisk (**):
+#foo/**/qux
+# This matches foo/bar/qux, foo/baz/qux, and foo/bar/baz/qux
+
+# You can also negate patterns with an exclamation (!).
+# For example, you can ignore all files in a docs folder with the file extension .md:
+#docs/*.md
+# Then explicitly reverse the ignore rule for a single file:
+#!docs/README.md

samples/client/petstore/java/retrofit2-play26/.openapi-generator/VERSION

@@ -0,0 +1 @@
+3.2.3-SNAPSHOT

samples/client/petstore/java/retrofit2-play26/.travis.yml

@@ -0,0 +1,17 @@
+#
+# Generated by: https://openapi-generator.tech
+#
+language: java
+jdk:
+  - oraclejdk8
+  - oraclejdk7
+before_install:
+  # ensure gradlew has proper permission
+  - chmod a+x ./gradlew
+script:
+  # test using maven
+  - mvn test
+  # uncomment below to test using gradle
+  # - gradle test
+  # uncomment below to test using sbt 
+  # - sbt test

samples/client/petstore/java/retrofit2-play26/README.md

@@ -0,0 +1,39 @@
+# petstore-java-client-retrofit2-play26
+
+## Requirements
+
+Building the API client library requires [Maven](https://maven.apache.org/) to be installed.
+
+## Installation & Usage
+
+To install the API client library to your local Maven repository, simply execute:
+
+```shell
+mvn install
+```
+
+To deploy it to a remote Maven repository instead, configure the settings of the repository and execute:
+
+```shell
+mvn deploy
+```
+
+Refer to the [official documentation](https://maven.apache.org/plugins/maven-deploy-plugin/usage.html) for more information.
+
+After the client library is installed/deployed, you can use it in your Maven project by adding the following to your *pom.xml*:
+
+```xml
+<dependency>
+    <groupId>org.openapitools</groupId>
+    <artifactId>petstore-java-client-retrofit2-play26</artifactId>
+    <version>1.0.0</version>
+    <scope>compile</scope>
+</dependency>
+
+```
+
+## Author
+
+
+
+

samples/client/petstore/java/retrofit2-play26/build.gradle

@@ -0,0 +1,125 @@
+apply plugin: 'idea'
+apply plugin: 'eclipse'
+
+group = 'org.openapitools'
+version = '1.0.0'
+
+buildscript {
+    repositories {
+        jcenter()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:2.3.+'
+        classpath 'com.github.dcendents:android-maven-gradle-plugin:1.5'
+    }
+}
+
+repositories {
+    jcenter()
+}
+
+
+if(hasProperty('target') && target == 'android') {
+
+    apply plugin: 'com.android.library'
+    apply plugin: 'com.github.dcendents.android-maven'
+
+    android {
+        compileSdkVersion 25
+        buildToolsVersion '25.0.2'
+        defaultConfig {
+            minSdkVersion 14
+            targetSdkVersion 25
+        }
+        compileOptions {
+            sourceCompatibility JavaVersion.VERSION_1_8
+            targetCompatibility JavaVersion.VERSION_1_8
+        }
+
+        // Rename the aar correctly
+        libraryVariants.all { variant ->
+            variant.outputs.each { output ->
+                def outputFile = output.outputFile
+                if (outputFile != null && outputFile.name.endsWith('.aar')) {
+                    def fileName = "${project.name}-${variant.baseName}-${version}.aar"
+                    output.outputFile = new File(outputFile.parent, fileName)
+                }
+            }
+        }
+
+        dependencies {
+            provided 'javax.annotation:jsr250-api:1.0'
+        }
+    }
+
+    afterEvaluate {
+        android.libraryVariants.all { variant ->
+            def task = project.tasks.create "jar${variant.name.capitalize()}", Jar
+            task.description = "Create jar artifact for ${variant.name}"
+            task.dependsOn variant.javaCompile
+            task.from variant.javaCompile.destinationDir
+            task.destinationDir = project.file("${project.buildDir}/outputs/jar")
+            task.archiveName = "${project.name}-${variant.baseName}-${version}.jar"
+            artifacts.add('archives', task);
+        }
+    }
+
+    task sourcesJar(type: Jar) {
+        from android.sourceSets.main.java.srcDirs
+        classifier = 'sources'
+    }
+
+    artifacts {
+        archives sourcesJar
+    }
+
+} else {
+
+    apply plugin: 'java'
+    apply plugin: 'maven'
+
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
+
+    install {
+        repositories.mavenInstaller {
+            pom.artifactId = 'petstore-java-client-retrofit2-play26'
+        }
+    }
+
+    task execute(type:JavaExec) {
+       main = System.getProperty('mainClass')
+       classpath = sourceSets.main.runtimeClasspath
+    }
+}
+
+ext {
+    oltu_version = "1.0.1"
+    retrofit_version = "2.3.0"
+    jackson_version = "2.8.10"
+    play_version = "2.6.7"
+    swagger_annotations_version = "1.5.17"
+    junit_version = "4.12"
+    threetenbp_version = "1.3.5"
+    json_fire_version = "1.8.0"
+}
+
+dependencies {
+    compile "com.squareup.retrofit2:retrofit:$retrofit_version"
+    compile "com.squareup.retrofit2:converter-scalars:$retrofit_version"
+    compile "com.squareup.retrofit2:converter-gson:$retrofit_version"
+    compile "io.swagger:swagger-annotations:$swagger_annotations_version"
+    compile ("org.apache.oltu.oauth2:org.apache.oltu.oauth2.client:$oltu_version"){
+        exclude group:'org.apache.oltu.oauth2' , module: 'org.apache.oltu.oauth2.common'
+    }
+    compile "io.gsonfire:gson-fire:$json_fire_version"
+    compile "org.threeten:threetenbp:$threetenbp_version"
+    compile "com.typesafe.play:play-ahc-ws_2.12:$play_version"
+    compile "javax.validation:validation-api:1.1.0.Final"
+    compile "com.squareup.retrofit2:converter-jackson:$retrofit_version"
+    compile "com.fasterxml.jackson.core:jackson-core:$jackson_version"
+    compile "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"
+    compile "com.fasterxml.jackson.datatype:jackson-datatype-jsr310:$jackson_version"
+
+    testCompile "junit:junit:$junit_version"
+}

samples/client/petstore/java/retrofit2-play26/build.sbt

@@ -0,0 +1,27 @@
+lazy val root = (project in file(".")).
+  settings(
+    organization := "org.openapitools",
+    name := "petstore-java-client-retrofit2-play26",
+    version := "1.0.0",
+    scalaVersion := "2.11.4",
+    scalacOptions ++= Seq("-feature"),
+    javacOptions in compile ++= Seq("-Xlint:deprecation"),
+    publishArtifact in (Compile, packageDoc) := false,
+    resolvers += Resolver.mavenLocal,
+    libraryDependencies ++= Seq(
+      "com.squareup.retrofit2" % "retrofit" % "2.3.0" % "compile",
+      "com.squareup.retrofit2" % "converter-scalars" % "2.3.0" % "compile",
+      "com.typesafe.play" % "play-ahc-ws_2.12" % "2.6.7" % "compile",
+      "javax.validation" % "validation-api" % "1.1.0.Final" % "compile",
+      "com.fasterxml.jackson.core" % "jackson-core" % "2.8.10" % "compile",
+      "com.fasterxml.jackson.core" % "jackson-annotations" % "2.8.10" % "compile",
+      "com.fasterxml.jackson.core" % "jackson-databind" % "2.8.10" % "compile",
+      "com.squareup.retrofit2" % "converter-jackson" % "2.3.0" % "compile",
+      "io.swagger" % "swagger-annotations" % "1.5.17" % "compile",
+      "org.apache.oltu.oauth2" % "org.apache.oltu.oauth2.client" % "1.0.1" % "compile",
+      "org.threeten" % "threetenbp" % "1.3.5" % "compile",
+      "io.gsonfire" % "gson-fire" % "1.8.0" % "compile",
+      "junit" % "junit" % "4.12" % "test",
+      "com.novocode" % "junit-interface" % "0.11" % "test"
+    )
+  )

samples/client/petstore/java/retrofit2-play26/docs/AdditionalPropertiesClass.md

@@ -0,0 +1,11 @@
+
+# AdditionalPropertiesClass
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**mapProperty** | **Map<String, String>** |  |  [optional]
+**mapOfMapProperty** | [**Map<String, Map<String, String>>**](Map.md) |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/Animal.md

@@ -0,0 +1,11 @@
+
+# Animal
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**className** | **String** |  | 
+**color** | **String** |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/AnimalFarm.md

@@ -0,0 +1,9 @@
+
+# AnimalFarm
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/AnotherFakeApi.md

@@ -0,0 +1,54 @@
+# AnotherFakeApi
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**call123testSpecialTags**](AnotherFakeApi.md#call123testSpecialTags) | **PATCH** another-fake/dummy | To test special tags
+
+
+<a name="call123testSpecialTags"></a>
+# **call123testSpecialTags**
+> Client call123testSpecialTags(client)
+
+To test special tags
+
+To test special tags and operation ID starting with number
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.AnotherFakeApi;
+
+
+AnotherFakeApi apiInstance = new AnotherFakeApi();
+Client client = new Client(); // Client | client model
+try {
+    Client result = apiInstance.call123testSpecialTags(client);
+    System.out.println(result);
+} catch (ApiException e) {
+    System.err.println("Exception when calling AnotherFakeApi#call123testSpecialTags");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **client** | [**Client**](Client.md)| client model |
+
+### Return type
+
+[**Client**](Client.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: application/json
+ - **Accept**: application/json
+

samples/client/petstore/java/retrofit2-play26/docs/ArrayOfArrayOfNumberOnly.md

@@ -0,0 +1,10 @@
+
+# ArrayOfArrayOfNumberOnly
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**arrayArrayNumber** | [**List<List<BigDecimal>>**](List.md) |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/ArrayOfNumberOnly.md

@@ -0,0 +1,10 @@
+
+# ArrayOfNumberOnly
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**arrayNumber** | [**List<BigDecimal>**](BigDecimal.md) |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/ArrayTest.md

@@ -0,0 +1,12 @@
+
+# ArrayTest
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**arrayOfString** | **List<String>** |  |  [optional]
+**arrayArrayOfInteger** | [**List<List<Long>>**](List.md) |  |  [optional]
+**arrayArrayOfModel** | [**List<List<ReadOnlyFirst>>**](List.md) |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/Capitalization.md

@@ -0,0 +1,15 @@
+
+# Capitalization
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**smallCamel** | **String** |  |  [optional]
+**capitalCamel** | **String** |  |  [optional]
+**smallSnake** | **String** |  |  [optional]
+**capitalSnake** | **String** |  |  [optional]
+**scAETHFlowPoints** | **String** |  |  [optional]
+**ATT_NAME** | **String** | Name of the pet  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/Cat.md

@@ -0,0 +1,10 @@
+
+# Cat
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**declawed** | **Boolean** |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/Category.md

@@ -0,0 +1,11 @@
+
+# Category
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | **Long** |  |  [optional]
+**name** | **String** |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/ClassModel.md

@@ -0,0 +1,10 @@
+
+# ClassModel
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**propertyClass** | **String** |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/Client.md

@@ -0,0 +1,10 @@
+
+# Client
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**client** | **String** |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/Dog.md

@@ -0,0 +1,10 @@
+
+# Dog
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**breed** | **String** |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/EnumArrays.md

@@ -0,0 +1,27 @@
+
+# EnumArrays
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**justSymbol** | [**JustSymbolEnum**](#JustSymbolEnum) |  |  [optional]
+**arrayEnum** | [**List<ArrayEnumEnum>**](#List<ArrayEnumEnum>) |  |  [optional]
+
+
+<a name="JustSymbolEnum"></a>
+## Enum: JustSymbolEnum
+Name | Value
+---- | -----
+GREATER_THAN_OR_EQUAL_TO | &quot;&gt;&#x3D;&quot;
+DOLLAR | &quot;$&quot;
+
+
+<a name="List<ArrayEnumEnum>"></a>
+## Enum: List&lt;ArrayEnumEnum&gt;
+Name | Value
+---- | -----
+FISH | &quot;fish&quot;
+CRAB | &quot;crab&quot;
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/EnumClass.md

@@ -0,0 +1,14 @@
+
+# EnumClass
+
+## Enum
+
+
+* `_ABC` (value: `"_abc"`)
+
+* `_EFG` (value: `"-efg"`)
+
+* `_XYZ_` (value: `"(xyz)"`)
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/EnumTest.md

@@ -0,0 +1,48 @@
+
+# EnumTest
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**enumString** | [**EnumStringEnum**](#EnumStringEnum) |  |  [optional]
+**enumStringRequired** | [**EnumStringRequiredEnum**](#EnumStringRequiredEnum) |  | 
+**enumInteger** | [**EnumIntegerEnum**](#EnumIntegerEnum) |  |  [optional]
+**enumNumber** | [**EnumNumberEnum**](#EnumNumberEnum) |  |  [optional]
+**outerEnum** | [**OuterEnum**](OuterEnum.md) |  |  [optional]
+
+
+<a name="EnumStringEnum"></a>
+## Enum: EnumStringEnum
+Name | Value
+---- | -----
+UPPER | &quot;UPPER&quot;
+LOWER | &quot;lower&quot;
+EMPTY | &quot;&quot;
+
+
+<a name="EnumStringRequiredEnum"></a>
+## Enum: EnumStringRequiredEnum
+Name | Value
+---- | -----
+UPPER | &quot;UPPER&quot;
+LOWER | &quot;lower&quot;
+EMPTY | &quot;&quot;
+
+
+<a name="EnumIntegerEnum"></a>
+## Enum: EnumIntegerEnum
+Name | Value
+---- | -----
+NUMBER_1 | 1
+NUMBER_MINUS_1 | -1
+
+
+<a name="EnumNumberEnum"></a>
+## Enum: EnumNumberEnum
+Name | Value
+---- | -----
+NUMBER_1_DOT_1 | 1.1
+NUMBER_MINUS_1_DOT_2 | -1.2
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/FakeApi.md

@@ -0,0 +1,555 @@
+# FakeApi
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**fakeOuterBooleanSerialize**](FakeApi.md#fakeOuterBooleanSerialize) | **POST** fake/outer/boolean | 
+[**fakeOuterCompositeSerialize**](FakeApi.md#fakeOuterCompositeSerialize) | **POST** fake/outer/composite | 
+[**fakeOuterNumberSerialize**](FakeApi.md#fakeOuterNumberSerialize) | **POST** fake/outer/number | 
+[**fakeOuterStringSerialize**](FakeApi.md#fakeOuterStringSerialize) | **POST** fake/outer/string | 
+[**testBodyWithFileSchema**](FakeApi.md#testBodyWithFileSchema) | **PUT** fake/body-with-file-schema | 
+[**testBodyWithQueryParams**](FakeApi.md#testBodyWithQueryParams) | **PUT** fake/body-with-query-params | 
+[**testClientModel**](FakeApi.md#testClientModel) | **PATCH** fake | To test \"client\" model
+[**testEndpointParameters**](FakeApi.md#testEndpointParameters) | **POST** fake | Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
+[**testEnumParameters**](FakeApi.md#testEnumParameters) | **GET** fake | To test enum parameters
+[**testInlineAdditionalProperties**](FakeApi.md#testInlineAdditionalProperties) | **POST** fake/inline-additionalProperties | test inline additionalProperties
+[**testJsonFormData**](FakeApi.md#testJsonFormData) | **GET** fake/jsonFormData | test json serialization of form data
+
+
+<a name="fakeOuterBooleanSerialize"></a>
+# **fakeOuterBooleanSerialize**
+> Boolean fakeOuterBooleanSerialize(body)
+
+
+
+Test serialization of outer boolean types
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.FakeApi;
+
+
+FakeApi apiInstance = new FakeApi();
+Boolean body = true; // Boolean | Input boolean as post body
+try {
+    Boolean result = apiInstance.fakeOuterBooleanSerialize(body);
+    System.out.println(result);
+} catch (ApiException e) {
+    System.err.println("Exception when calling FakeApi#fakeOuterBooleanSerialize");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **body** | **Boolean**| Input boolean as post body | [optional]
+
+### Return type
+
+**Boolean**
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: */*
+
+<a name="fakeOuterCompositeSerialize"></a>
+# **fakeOuterCompositeSerialize**
+> OuterComposite fakeOuterCompositeSerialize(outerComposite)
+
+
+
+Test serialization of object with outer number type
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.FakeApi;
+
+
+FakeApi apiInstance = new FakeApi();
+OuterComposite outerComposite = new OuterComposite(); // OuterComposite | Input composite as post body
+try {
+    OuterComposite result = apiInstance.fakeOuterCompositeSerialize(outerComposite);
+    System.out.println(result);
+} catch (ApiException e) {
+    System.err.println("Exception when calling FakeApi#fakeOuterCompositeSerialize");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **outerComposite** | [**OuterComposite**](OuterComposite.md)| Input composite as post body | [optional]
+
+### Return type
+
+[**OuterComposite**](OuterComposite.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: */*
+
+<a name="fakeOuterNumberSerialize"></a>
+# **fakeOuterNumberSerialize**
+> BigDecimal fakeOuterNumberSerialize(body)
+
+
+
+Test serialization of outer number types
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.FakeApi;
+
+
+FakeApi apiInstance = new FakeApi();
+BigDecimal body = new BigDecimal(); // BigDecimal | Input number as post body
+try {
+    BigDecimal result = apiInstance.fakeOuterNumberSerialize(body);
+    System.out.println(result);
+} catch (ApiException e) {
+    System.err.println("Exception when calling FakeApi#fakeOuterNumberSerialize");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **body** | **BigDecimal**| Input number as post body | [optional]
+
+### Return type
+
+[**BigDecimal**](BigDecimal.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: */*
+
+<a name="fakeOuterStringSerialize"></a>
+# **fakeOuterStringSerialize**
+> String fakeOuterStringSerialize(body)
+
+
+
+Test serialization of outer string types
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.FakeApi;
+
+
+FakeApi apiInstance = new FakeApi();
+String body = "body_example"; // String | Input string as post body
+try {
+    String result = apiInstance.fakeOuterStringSerialize(body);
+    System.out.println(result);
+} catch (ApiException e) {
+    System.err.println("Exception when calling FakeApi#fakeOuterStringSerialize");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **body** | **String**| Input string as post body | [optional]
+
+### Return type
+
+**String**
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: */*
+
+<a name="testBodyWithFileSchema"></a>
+# **testBodyWithFileSchema**
+> testBodyWithFileSchema(fileSchemaTestClass)
+
+
+
+For this test, the body for this request much reference a schema named &#x60;File&#x60;.
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.FakeApi;
+
+
+FakeApi apiInstance = new FakeApi();
+FileSchemaTestClass fileSchemaTestClass = new FileSchemaTestClass(); // FileSchemaTestClass | 
+try {
+    apiInstance.testBodyWithFileSchema(fileSchemaTestClass);
+} catch (ApiException e) {
+    System.err.println("Exception when calling FakeApi#testBodyWithFileSchema");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **fileSchemaTestClass** | [**FileSchemaTestClass**](FileSchemaTestClass.md)|  |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: application/json
+ - **Accept**: Not defined
+
+<a name="testBodyWithQueryParams"></a>
+# **testBodyWithQueryParams**
+> testBodyWithQueryParams(query, user)
+
+
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.FakeApi;
+
+
+FakeApi apiInstance = new FakeApi();
+String query = "query_example"; // String | 
+User user = new User(); // User | 
+try {
+    apiInstance.testBodyWithQueryParams(query, user);
+} catch (ApiException e) {
+    System.err.println("Exception when calling FakeApi#testBodyWithQueryParams");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **query** | **String**|  |
+ **user** | [**User**](User.md)|  |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: application/json
+ - **Accept**: Not defined
+
+<a name="testClientModel"></a>
+# **testClientModel**
+> Client testClientModel(client)
+
+To test \&quot;client\&quot; model
+
+To test \&quot;client\&quot; model
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.FakeApi;
+
+
+FakeApi apiInstance = new FakeApi();
+Client client = new Client(); // Client | client model
+try {
+    Client result = apiInstance.testClientModel(client);
+    System.out.println(result);
+} catch (ApiException e) {
+    System.err.println("Exception when calling FakeApi#testClientModel");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **client** | [**Client**](Client.md)| client model |
+
+### Return type
+
+[**Client**](Client.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: application/json
+ - **Accept**: application/json
+
+<a name="testEndpointParameters"></a>
+# **testEndpointParameters**
+> testEndpointParameters(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback)
+
+Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
+
+Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiClient;
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.Configuration;
+//import org.openapitools.client.auth.*;
+//import org.openapitools.client.api.FakeApi;
+
+ApiClient defaultClient = Configuration.getDefaultApiClient();
+
+// Configure HTTP basic authorization: http_basic_test
+HttpBasicAuth http_basic_test = (HttpBasicAuth) defaultClient.getAuthentication("http_basic_test");
+http_basic_test.setUsername("YOUR USERNAME");
+http_basic_test.setPassword("YOUR PASSWORD");
+
+FakeApi apiInstance = new FakeApi();
+BigDecimal number = new BigDecimal(); // BigDecimal | None
+Double _double = 3.4D; // Double | None
+String patternWithoutDelimiter = "null"; // String | None
+byte[] _byte = null; // byte[] | None
+Integer integer = null; // Integer | None
+Integer int32 = null; // Integer | None
+Long int64 = nullL; // Long | None
+Float _float = nullF; // Float | None
+String string = "null"; // String | None
+File binary = new File("null"); // File | None
+LocalDate date = new LocalDate(); // LocalDate | None
+OffsetDateTime dateTime = new OffsetDateTime(); // OffsetDateTime | None
+String password = "null"; // String | None
+String paramCallback = "null"; // String | None
+try {
+    apiInstance.testEndpointParameters(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback);
+} catch (ApiException e) {
+    System.err.println("Exception when calling FakeApi#testEndpointParameters");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **number** | **BigDecimal**| None | [default to null]
+ **_double** | **Double**| None | [default to null]
+ **patternWithoutDelimiter** | **String**| None | [default to null]
+ **_byte** | **byte[]**| None | [default to null]
+ **integer** | **Integer**| None | [optional] [default to null]
+ **int32** | **Integer**| None | [optional] [default to null]
+ **int64** | **Long**| None | [optional] [default to null]
+ **_float** | **Float**| None | [optional] [default to null]
+ **string** | **String**| None | [optional] [default to null]
+ **binary** | **File**| None | [optional] [default to null]
+ **date** | **LocalDate**| None | [optional] [default to null]
+ **dateTime** | **OffsetDateTime**| None | [optional] [default to null]
+ **password** | **String**| None | [optional] [default to null]
+ **paramCallback** | **String**| None | [optional] [default to null]
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+[http_basic_test](../README.md#http_basic_test)
+
+### HTTP request headers
+
+ - **Content-Type**: application/x-www-form-urlencoded
+ - **Accept**: Not defined
+
+<a name="testEnumParameters"></a>
+# **testEnumParameters**
+> testEnumParameters(enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble, enumFormStringArray, enumFormString)
+
+To test enum parameters
+
+To test enum parameters
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.FakeApi;
+
+
+FakeApi apiInstance = new FakeApi();
+List<String> enumHeaderStringArray = Arrays.asList("enumHeaderStringArray_example"); // List<String> | Header parameter enum test (string array)
+String enumHeaderString = "-efg"; // String | Header parameter enum test (string)
+List<String> enumQueryStringArray = Arrays.asList("enumQueryStringArray_example"); // List<String> | Query parameter enum test (string array)
+String enumQueryString = "-efg"; // String | Query parameter enum test (string)
+Integer enumQueryInteger = 56; // Integer | Query parameter enum test (double)
+Double enumQueryDouble = 3.4D; // Double | Query parameter enum test (double)
+List<String> enumFormStringArray = "$"; // List<String> | Form parameter enum test (string array)
+String enumFormString = "-efg"; // String | Form parameter enum test (string)
+try {
+    apiInstance.testEnumParameters(enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble, enumFormStringArray, enumFormString);
+} catch (ApiException e) {
+    System.err.println("Exception when calling FakeApi#testEnumParameters");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **enumHeaderStringArray** | [**List&lt;String&gt;**](String.md)| Header parameter enum test (string array) | [optional] [enum: >, $]
+ **enumHeaderString** | **String**| Header parameter enum test (string) | [optional] [default to -efg] [enum: _abc, -efg, (xyz)]
+ **enumQueryStringArray** | [**List&lt;String&gt;**](String.md)| Query parameter enum test (string array) | [optional] [enum: >, $]
+ **enumQueryString** | **String**| Query parameter enum test (string) | [optional] [default to -efg] [enum: _abc, -efg, (xyz)]
+ **enumQueryInteger** | **Integer**| Query parameter enum test (double) | [optional] [enum: 1, -2]
+ **enumQueryDouble** | **Double**| Query parameter enum test (double) | [optional] [enum: 1.1, -1.2]
+ **enumFormStringArray** | [**List&lt;String&gt;**](String.md)| Form parameter enum test (string array) | [optional] [default to $] [enum: >, $]
+ **enumFormString** | **String**| Form parameter enum test (string) | [optional] [default to -efg] [enum: _abc, -efg, (xyz)]
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: application/x-www-form-urlencoded
+ - **Accept**: Not defined
+
+<a name="testInlineAdditionalProperties"></a>
+# **testInlineAdditionalProperties**
+> testInlineAdditionalProperties(requestBody)
+
+test inline additionalProperties
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.FakeApi;
+
+
+FakeApi apiInstance = new FakeApi();
+Map<String, String> requestBody = new HashMap(); // Map<String, String> | request body
+try {
+    apiInstance.testInlineAdditionalProperties(requestBody);
+} catch (ApiException e) {
+    System.err.println("Exception when calling FakeApi#testInlineAdditionalProperties");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **requestBody** | [**Map&lt;String, String&gt;**](String.md)| request body |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: application/json
+ - **Accept**: Not defined
+
+<a name="testJsonFormData"></a>
+# **testJsonFormData**
+> testJsonFormData(param, param2)
+
+test json serialization of form data
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.FakeApi;
+
+
+FakeApi apiInstance = new FakeApi();
+String param = "null"; // String | field1
+String param2 = "null"; // String | field2
+try {
+    apiInstance.testJsonFormData(param, param2);
+} catch (ApiException e) {
+    System.err.println("Exception when calling FakeApi#testJsonFormData");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **param** | **String**| field1 | [default to null]
+ **param2** | **String**| field2 | [default to null]
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: application/x-www-form-urlencoded
+ - **Accept**: Not defined
+

samples/client/petstore/java/retrofit2-play26/docs/FakeClassnameTags123Api.md

@@ -0,0 +1,64 @@
+# FakeClassnameTags123Api
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**testClassname**](FakeClassnameTags123Api.md#testClassname) | **PATCH** fake_classname_test | To test class name in snake case
+
+
+<a name="testClassname"></a>
+# **testClassname**
+> Client testClassname(client)
+
+To test class name in snake case
+
+To test class name in snake case
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiClient;
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.Configuration;
+//import org.openapitools.client.auth.*;
+//import org.openapitools.client.api.FakeClassnameTags123Api;
+
+ApiClient defaultClient = Configuration.getDefaultApiClient();
+
+// Configure API key authorization: api_key_query
+ApiKeyAuth api_key_query = (ApiKeyAuth) defaultClient.getAuthentication("api_key_query");
+api_key_query.setApiKey("YOUR API KEY");
+// Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
+//api_key_query.setApiKeyPrefix("Token");
+
+FakeClassnameTags123Api apiInstance = new FakeClassnameTags123Api();
+Client client = new Client(); // Client | client model
+try {
+    Client result = apiInstance.testClassname(client);
+    System.out.println(result);
+} catch (ApiException e) {
+    System.err.println("Exception when calling FakeClassnameTags123Api#testClassname");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **client** | [**Client**](Client.md)| client model |
+
+### Return type
+
+[**Client**](Client.md)
+
+### Authorization
+
+[api_key_query](../README.md#api_key_query)
+
+### HTTP request headers
+
+ - **Content-Type**: application/json
+ - **Accept**: application/json
+

samples/client/petstore/java/retrofit2-play26/docs/FileSchemaTestClass.md

@@ -0,0 +1,11 @@
+
+# FileSchemaTestClass
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
+**files** | [**List<java.io.File>**](java.io.File.md) |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/FormatTest.md

@@ -0,0 +1,22 @@
+
+# FormatTest
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**integer** | **Integer** |  |  [optional]
+**int32** | **Integer** |  |  [optional]
+**int64** | **Long** |  |  [optional]
+**number** | [**BigDecimal**](BigDecimal.md) |  | 
+**_float** | **Float** |  |  [optional]
+**_double** | **Double** |  |  [optional]
+**string** | **String** |  |  [optional]
+**_byte** | **byte[]** |  | 
+**binary** | [**File**](File.md) |  |  [optional]
+**date** | [**LocalDate**](LocalDate.md) |  | 
+**dateTime** | [**OffsetDateTime**](OffsetDateTime.md) |  |  [optional]
+**uuid** | [**UUID**](UUID.md) |  |  [optional]
+**password** | **String** |  | 
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/HasOnlyReadOnly.md

@@ -0,0 +1,11 @@
+
+# HasOnlyReadOnly
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**bar** | **String** |  |  [optional]
+**foo** | **String** |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/MapTest.md

@@ -0,0 +1,21 @@
+
+# MapTest
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**mapMapOfString** | [**Map<String, Map<String, String>>**](Map.md) |  |  [optional]
+**mapOfEnumString** | [**Map<String, InnerEnum>**](#Map<String, InnerEnum>) |  |  [optional]
+**directMap** | **Map<String, Boolean>** |  |  [optional]
+**indirectMap** | [**StringBooleanMap**](StringBooleanMap.md) |  |  [optional]
+
+
+<a name="Map<String, InnerEnum>"></a>
+## Enum: Map&lt;String, InnerEnum&gt;
+Name | Value
+---- | -----
+UPPER | &quot;UPPER&quot;
+LOWER | &quot;lower&quot;
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/MixedPropertiesAndAdditionalPropertiesClass.md

@@ -0,0 +1,12 @@
+
+# MixedPropertiesAndAdditionalPropertiesClass
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**uuid** | [**UUID**](UUID.md) |  |  [optional]
+**dateTime** | [**OffsetDateTime**](OffsetDateTime.md) |  |  [optional]
+**map** | [**Map<String, Animal>**](Animal.md) |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/Model200Response.md

@@ -0,0 +1,11 @@
+
+# Model200Response
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**name** | **Integer** |  |  [optional]
+**propertyClass** | **String** |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/ModelApiResponse.md

@@ -0,0 +1,12 @@
+
+# ModelApiResponse
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**code** | **Integer** |  |  [optional]
+**type** | **String** |  |  [optional]
+**message** | **String** |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/ModelReturn.md

@@ -0,0 +1,10 @@
+
+# ModelReturn
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**_return** | **Integer** |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/Name.md

@@ -0,0 +1,13 @@
+
+# Name
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**name** | **Integer** |  | 
+**snakeCase** | **Integer** |  |  [optional]
+**property** | **String** |  |  [optional]
+**_123number** | **Integer** |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/NumberOnly.md

@@ -0,0 +1,10 @@
+
+# NumberOnly
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**justNumber** | [**BigDecimal**](BigDecimal.md) |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/Order.md

@@ -0,0 +1,24 @@
+
+# Order
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | **Long** |  |  [optional]
+**petId** | **Long** |  |  [optional]
+**quantity** | **Integer** |  |  [optional]
+**shipDate** | [**OffsetDateTime**](OffsetDateTime.md) |  |  [optional]
+**status** | [**StatusEnum**](#StatusEnum) | Order Status |  [optional]
+**complete** | **Boolean** |  |  [optional]
+
+
+<a name="StatusEnum"></a>
+## Enum: StatusEnum
+Name | Value
+---- | -----
+PLACED | &quot;placed&quot;
+APPROVED | &quot;approved&quot;
+DELIVERED | &quot;delivered&quot;
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/OuterComposite.md

@@ -0,0 +1,12 @@
+
+# OuterComposite
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**myNumber** | [**BigDecimal**](BigDecimal.md) |  |  [optional]
+**myString** | **String** |  |  [optional]
+**myBoolean** | **Boolean** |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/OuterEnum.md

@@ -0,0 +1,14 @@
+
+# OuterEnum
+
+## Enum
+
+
+* `PLACED` (value: `"placed"`)
+
+* `APPROVED` (value: `"approved"`)
+
+* `DELIVERED` (value: `"delivered"`)
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/Pet.md

@@ -0,0 +1,24 @@
+
+# Pet
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | **Long** |  |  [optional]
+**category** | [**Category**](Category.md) |  |  [optional]
+**name** | **String** |  | 
+**photoUrls** | **List<String>** |  | 
+**tags** | [**List<Tag>**](Tag.md) |  |  [optional]
+**status** | [**StatusEnum**](#StatusEnum) | pet status in the store |  [optional]
+
+
+<a name="StatusEnum"></a>
+## Enum: StatusEnum
+Name | Value
+---- | -----
+AVAILABLE | &quot;available&quot;
+PENDING | &quot;pending&quot;
+SOLD | &quot;sold&quot;
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/PetApi.md

@@ -0,0 +1,494 @@
+# PetApi
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**addPet**](PetApi.md#addPet) | **POST** pet | Add a new pet to the store
+[**deletePet**](PetApi.md#deletePet) | **DELETE** pet/{petId} | Deletes a pet
+[**findPetsByStatus**](PetApi.md#findPetsByStatus) | **GET** pet/findByStatus | Finds Pets by status
+[**findPetsByTags**](PetApi.md#findPetsByTags) | **GET** pet/findByTags | Finds Pets by tags
+[**getPetById**](PetApi.md#getPetById) | **GET** pet/{petId} | Find pet by ID
+[**updatePet**](PetApi.md#updatePet) | **PUT** pet | Update an existing pet
+[**updatePetWithForm**](PetApi.md#updatePetWithForm) | **POST** pet/{petId} | Updates a pet in the store with form data
+[**uploadFile**](PetApi.md#uploadFile) | **POST** pet/{petId}/uploadImage | uploads an image
+[**uploadFileWithRequiredFile**](PetApi.md#uploadFileWithRequiredFile) | **POST** fake/{petId}/uploadImageWithRequiredFile | uploads an image (required)
+
+
+<a name="addPet"></a>
+# **addPet**
+> addPet(pet)
+
+Add a new pet to the store
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiClient;
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.Configuration;
+//import org.openapitools.client.auth.*;
+//import org.openapitools.client.api.PetApi;
+
+ApiClient defaultClient = Configuration.getDefaultApiClient();
+
+// Configure OAuth2 access token for authorization: petstore_auth
+OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
+petstore_auth.setAccessToken("YOUR ACCESS TOKEN");
+
+PetApi apiInstance = new PetApi();
+Pet pet = new Pet(); // Pet | Pet object that needs to be added to the store
+try {
+    apiInstance.addPet(pet);
+} catch (ApiException e) {
+    System.err.println("Exception when calling PetApi#addPet");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **pet** | [**Pet**](Pet.md)| Pet object that needs to be added to the store |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+[petstore_auth](../README.md#petstore_auth)
+
+### HTTP request headers
+
+ - **Content-Type**: application/json, application/xml
+ - **Accept**: Not defined
+
+<a name="deletePet"></a>
+# **deletePet**
+> deletePet(petId, apiKey)
+
+Deletes a pet
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiClient;
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.Configuration;
+//import org.openapitools.client.auth.*;
+//import org.openapitools.client.api.PetApi;
+
+ApiClient defaultClient = Configuration.getDefaultApiClient();
+
+// Configure OAuth2 access token for authorization: petstore_auth
+OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
+petstore_auth.setAccessToken("YOUR ACCESS TOKEN");
+
+PetApi apiInstance = new PetApi();
+Long petId = 56L; // Long | Pet id to delete
+String apiKey = "apiKey_example"; // String | 
+try {
+    apiInstance.deletePet(petId, apiKey);
+} catch (ApiException e) {
+    System.err.println("Exception when calling PetApi#deletePet");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **petId** | **Long**| Pet id to delete |
+ **apiKey** | **String**|  | [optional]
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+[petstore_auth](../README.md#petstore_auth)
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: Not defined
+
+<a name="findPetsByStatus"></a>
+# **findPetsByStatus**
+> List&lt;Pet&gt; findPetsByStatus(status)
+
+Finds Pets by status
+
+Multiple status values can be provided with comma separated strings
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiClient;
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.Configuration;
+//import org.openapitools.client.auth.*;
+//import org.openapitools.client.api.PetApi;
+
+ApiClient defaultClient = Configuration.getDefaultApiClient();
+
+// Configure OAuth2 access token for authorization: petstore_auth
+OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
+petstore_auth.setAccessToken("YOUR ACCESS TOKEN");
+
+PetApi apiInstance = new PetApi();
+List<String> status = Arrays.asList("status_example"); // List<String> | Status values that need to be considered for filter
+try {
+    List<Pet> result = apiInstance.findPetsByStatus(status);
+    System.out.println(result);
+} catch (ApiException e) {
+    System.err.println("Exception when calling PetApi#findPetsByStatus");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **status** | [**List&lt;String&gt;**](String.md)| Status values that need to be considered for filter | [enum: available, pending, sold]
+
+### Return type
+
+[**List&lt;Pet&gt;**](Pet.md)
+
+### Authorization
+
+[petstore_auth](../README.md#petstore_auth)
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/xml, application/json
+
+<a name="findPetsByTags"></a>
+# **findPetsByTags**
+> List&lt;Pet&gt; findPetsByTags(tags)
+
+Finds Pets by tags
+
+Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiClient;
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.Configuration;
+//import org.openapitools.client.auth.*;
+//import org.openapitools.client.api.PetApi;
+
+ApiClient defaultClient = Configuration.getDefaultApiClient();
+
+// Configure OAuth2 access token for authorization: petstore_auth
+OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
+petstore_auth.setAccessToken("YOUR ACCESS TOKEN");
+
+PetApi apiInstance = new PetApi();
+List<String> tags = Arrays.asList("tags_example"); // List<String> | Tags to filter by
+try {
+    List<Pet> result = apiInstance.findPetsByTags(tags);
+    System.out.println(result);
+} catch (ApiException e) {
+    System.err.println("Exception when calling PetApi#findPetsByTags");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **tags** | [**List&lt;String&gt;**](String.md)| Tags to filter by |
+
+### Return type
+
+[**List&lt;Pet&gt;**](Pet.md)
+
+### Authorization
+
+[petstore_auth](../README.md#petstore_auth)
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/xml, application/json
+
+<a name="getPetById"></a>
+# **getPetById**
+> Pet getPetById(petId)
+
+Find pet by ID
+
+Returns a single pet
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiClient;
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.Configuration;
+//import org.openapitools.client.auth.*;
+//import org.openapitools.client.api.PetApi;
+
+ApiClient defaultClient = Configuration.getDefaultApiClient();
+
+// Configure API key authorization: api_key
+ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
+api_key.setApiKey("YOUR API KEY");
+// Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
+//api_key.setApiKeyPrefix("Token");
+
+PetApi apiInstance = new PetApi();
+Long petId = 56L; // Long | ID of pet to return
+try {
+    Pet result = apiInstance.getPetById(petId);
+    System.out.println(result);
+} catch (ApiException e) {
+    System.err.println("Exception when calling PetApi#getPetById");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **petId** | **Long**| ID of pet to return |
+
+### Return type
+
+[**Pet**](Pet.md)
+
+### Authorization
+
+[api_key](../README.md#api_key)
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/xml, application/json
+
+<a name="updatePet"></a>
+# **updatePet**
+> updatePet(pet)
+
+Update an existing pet
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiClient;
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.Configuration;
+//import org.openapitools.client.auth.*;
+//import org.openapitools.client.api.PetApi;
+
+ApiClient defaultClient = Configuration.getDefaultApiClient();
+
+// Configure OAuth2 access token for authorization: petstore_auth
+OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
+petstore_auth.setAccessToken("YOUR ACCESS TOKEN");
+
+PetApi apiInstance = new PetApi();
+Pet pet = new Pet(); // Pet | Pet object that needs to be added to the store
+try {
+    apiInstance.updatePet(pet);
+} catch (ApiException e) {
+    System.err.println("Exception when calling PetApi#updatePet");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **pet** | [**Pet**](Pet.md)| Pet object that needs to be added to the store |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+[petstore_auth](../README.md#petstore_auth)
+
+### HTTP request headers
+
+ - **Content-Type**: application/json, application/xml
+ - **Accept**: Not defined
+
+<a name="updatePetWithForm"></a>
+# **updatePetWithForm**
+> updatePetWithForm(petId, name, status)
+
+Updates a pet in the store with form data
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiClient;
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.Configuration;
+//import org.openapitools.client.auth.*;
+//import org.openapitools.client.api.PetApi;
+
+ApiClient defaultClient = Configuration.getDefaultApiClient();
+
+// Configure OAuth2 access token for authorization: petstore_auth
+OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
+petstore_auth.setAccessToken("YOUR ACCESS TOKEN");
+
+PetApi apiInstance = new PetApi();
+Long petId = 56L; // Long | ID of pet that needs to be updated
+String name = "null"; // String | Updated name of the pet
+String status = "null"; // String | Updated status of the pet
+try {
+    apiInstance.updatePetWithForm(petId, name, status);
+} catch (ApiException e) {
+    System.err.println("Exception when calling PetApi#updatePetWithForm");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **petId** | **Long**| ID of pet that needs to be updated |
+ **name** | **String**| Updated name of the pet | [optional] [default to null]
+ **status** | **String**| Updated status of the pet | [optional] [default to null]
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+[petstore_auth](../README.md#petstore_auth)
+
+### HTTP request headers
+
+ - **Content-Type**: application/x-www-form-urlencoded
+ - **Accept**: Not defined
+
+<a name="uploadFile"></a>
+# **uploadFile**
+> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+
+uploads an image
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiClient;
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.Configuration;
+//import org.openapitools.client.auth.*;
+//import org.openapitools.client.api.PetApi;
+
+ApiClient defaultClient = Configuration.getDefaultApiClient();
+
+// Configure OAuth2 access token for authorization: petstore_auth
+OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
+petstore_auth.setAccessToken("YOUR ACCESS TOKEN");
+
+PetApi apiInstance = new PetApi();
+Long petId = 56L; // Long | ID of pet to update
+String additionalMetadata = "null"; // String | Additional data to pass to server
+File file = new File("null"); // File | file to upload
+try {
+    ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+    System.out.println(result);
+} catch (ApiException e) {
+    System.err.println("Exception when calling PetApi#uploadFile");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **petId** | **Long**| ID of pet to update |
+ **additionalMetadata** | **String**| Additional data to pass to server | [optional] [default to null]
+ **file** | **File**| file to upload | [optional] [default to null]
+
+### Return type
+
+[**ModelApiResponse**](ModelApiResponse.md)
+
+### Authorization
+
+[petstore_auth](../README.md#petstore_auth)
+
+### HTTP request headers
+
+ - **Content-Type**: multipart/form-data
+ - **Accept**: application/json
+
+<a name="uploadFileWithRequiredFile"></a>
+# **uploadFileWithRequiredFile**
+> ModelApiResponse uploadFileWithRequiredFile(petId, requiredFile, additionalMetadata)
+
+uploads an image (required)
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiClient;
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.Configuration;
+//import org.openapitools.client.auth.*;
+//import org.openapitools.client.api.PetApi;
+
+ApiClient defaultClient = Configuration.getDefaultApiClient();
+
+// Configure OAuth2 access token for authorization: petstore_auth
+OAuth petstore_auth = (OAuth) defaultClient.getAuthentication("petstore_auth");
+petstore_auth.setAccessToken("YOUR ACCESS TOKEN");
+
+PetApi apiInstance = new PetApi();
+Long petId = 56L; // Long | ID of pet to update
+File requiredFile = new File("null"); // File | file to upload
+String additionalMetadata = "null"; // String | Additional data to pass to server
+try {
+    ModelApiResponse result = apiInstance.uploadFileWithRequiredFile(petId, requiredFile, additionalMetadata);
+    System.out.println(result);
+} catch (ApiException e) {
+    System.err.println("Exception when calling PetApi#uploadFileWithRequiredFile");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **petId** | **Long**| ID of pet to update |
+ **requiredFile** | **File**| file to upload | [default to null]
+ **additionalMetadata** | **String**| Additional data to pass to server | [optional] [default to null]
+
+### Return type
+
+[**ModelApiResponse**](ModelApiResponse.md)
+
+### Authorization
+
+[petstore_auth](../README.md#petstore_auth)
+
+### HTTP request headers
+
+ - **Content-Type**: multipart/form-data
+ - **Accept**: application/json
+

samples/client/petstore/java/retrofit2-play26/docs/ReadOnlyFirst.md

@@ -0,0 +1,11 @@
+
+# ReadOnlyFirst
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**bar** | **String** |  |  [optional]
+**baz** | **String** |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/SpecialModelName.md

@@ -0,0 +1,10 @@
+
+# SpecialModelName
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**$specialPropertyName** | **Long** |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/StoreApi.md

@@ -0,0 +1,195 @@
+# StoreApi
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**deleteOrder**](StoreApi.md#deleteOrder) | **DELETE** store/order/{order_id} | Delete purchase order by ID
+[**getInventory**](StoreApi.md#getInventory) | **GET** store/inventory | Returns pet inventories by status
+[**getOrderById**](StoreApi.md#getOrderById) | **GET** store/order/{order_id} | Find purchase order by ID
+[**placeOrder**](StoreApi.md#placeOrder) | **POST** store/order | Place an order for a pet
+
+
+<a name="deleteOrder"></a>
+# **deleteOrder**
+> deleteOrder(orderId)
+
+Delete purchase order by ID
+
+For valid response try integer IDs with value &lt; 1000. Anything above 1000 or nonintegers will generate API errors
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.StoreApi;
+
+
+StoreApi apiInstance = new StoreApi();
+String orderId = "orderId_example"; // String | ID of the order that needs to be deleted
+try {
+    apiInstance.deleteOrder(orderId);
+} catch (ApiException e) {
+    System.err.println("Exception when calling StoreApi#deleteOrder");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **orderId** | **String**| ID of the order that needs to be deleted |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: Not defined
+
+<a name="getInventory"></a>
+# **getInventory**
+> Map&lt;String, Integer&gt; getInventory()
+
+Returns pet inventories by status
+
+Returns a map of status codes to quantities
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiClient;
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.Configuration;
+//import org.openapitools.client.auth.*;
+//import org.openapitools.client.api.StoreApi;
+
+ApiClient defaultClient = Configuration.getDefaultApiClient();
+
+// Configure API key authorization: api_key
+ApiKeyAuth api_key = (ApiKeyAuth) defaultClient.getAuthentication("api_key");
+api_key.setApiKey("YOUR API KEY");
+// Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
+//api_key.setApiKeyPrefix("Token");
+
+StoreApi apiInstance = new StoreApi();
+try {
+    Map<String, Integer> result = apiInstance.getInventory();
+    System.out.println(result);
+} catch (ApiException e) {
+    System.err.println("Exception when calling StoreApi#getInventory");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+This endpoint does not need any parameter.
+
+### Return type
+
+**Map&lt;String, Integer&gt;**
+
+### Authorization
+
+[api_key](../README.md#api_key)
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/json
+
+<a name="getOrderById"></a>
+# **getOrderById**
+> Order getOrderById(orderId)
+
+Find purchase order by ID
+
+For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.StoreApi;
+
+
+StoreApi apiInstance = new StoreApi();
+Long orderId = 56L; // Long | ID of pet that needs to be fetched
+try {
+    Order result = apiInstance.getOrderById(orderId);
+    System.out.println(result);
+} catch (ApiException e) {
+    System.err.println("Exception when calling StoreApi#getOrderById");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **orderId** | **Long**| ID of pet that needs to be fetched |
+
+### Return type
+
+[**Order**](Order.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/xml, application/json
+
+<a name="placeOrder"></a>
+# **placeOrder**
+> Order placeOrder(order)
+
+Place an order for a pet
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.StoreApi;
+
+
+StoreApi apiInstance = new StoreApi();
+Order order = new Order(); // Order | order placed for purchasing the pet
+try {
+    Order result = apiInstance.placeOrder(order);
+    System.out.println(result);
+} catch (ApiException e) {
+    System.err.println("Exception when calling StoreApi#placeOrder");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **order** | [**Order**](Order.md)| order placed for purchasing the pet |
+
+### Return type
+
+[**Order**](Order.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/xml, application/json
+

samples/client/petstore/java/retrofit2-play26/docs/StringBooleanMap.md

@@ -0,0 +1,9 @@
+
+# StringBooleanMap
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/Tag.md

@@ -0,0 +1,11 @@
+
+# Tag
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | **Long** |  |  [optional]
+**name** | **String** |  |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/User.md

@@ -0,0 +1,17 @@
+
+# User
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | **Long** |  |  [optional]
+**username** | **String** |  |  [optional]
+**firstName** | **String** |  |  [optional]
+**lastName** | **String** |  |  [optional]
+**email** | **String** |  |  [optional]
+**password** | **String** |  |  [optional]
+**phone** | **String** |  |  [optional]
+**userStatus** | **Integer** | User Status |  [optional]
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/UserApi.md

@@ -0,0 +1,360 @@
+# UserApi
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**createUser**](UserApi.md#createUser) | **POST** user | Create user
+[**createUsersWithArrayInput**](UserApi.md#createUsersWithArrayInput) | **POST** user/createWithArray | Creates list of users with given input array
+[**createUsersWithListInput**](UserApi.md#createUsersWithListInput) | **POST** user/createWithList | Creates list of users with given input array
+[**deleteUser**](UserApi.md#deleteUser) | **DELETE** user/{username} | Delete user
+[**getUserByName**](UserApi.md#getUserByName) | **GET** user/{username} | Get user by user name
+[**loginUser**](UserApi.md#loginUser) | **GET** user/login | Logs user into the system
+[**logoutUser**](UserApi.md#logoutUser) | **GET** user/logout | Logs out current logged in user session
+[**updateUser**](UserApi.md#updateUser) | **PUT** user/{username} | Updated user
+
+
+<a name="createUser"></a>
+# **createUser**
+> createUser(user)
+
+Create user
+
+This can only be done by the logged in user.
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.UserApi;
+
+
+UserApi apiInstance = new UserApi();
+User user = new User(); // User | Created user object
+try {
+    apiInstance.createUser(user);
+} catch (ApiException e) {
+    System.err.println("Exception when calling UserApi#createUser");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **user** | [**User**](User.md)| Created user object |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: Not defined
+
+<a name="createUsersWithArrayInput"></a>
+# **createUsersWithArrayInput**
+> createUsersWithArrayInput(user)
+
+Creates list of users with given input array
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.UserApi;
+
+
+UserApi apiInstance = new UserApi();
+List<User> user = Arrays.asList(new List()); // List<User> | List of user object
+try {
+    apiInstance.createUsersWithArrayInput(user);
+} catch (ApiException e) {
+    System.err.println("Exception when calling UserApi#createUsersWithArrayInput");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **user** | [**List&lt;User&gt;**](List.md)| List of user object |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: Not defined
+
+<a name="createUsersWithListInput"></a>
+# **createUsersWithListInput**
+> createUsersWithListInput(user)
+
+Creates list of users with given input array
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.UserApi;
+
+
+UserApi apiInstance = new UserApi();
+List<User> user = Arrays.asList(new List()); // List<User> | List of user object
+try {
+    apiInstance.createUsersWithListInput(user);
+} catch (ApiException e) {
+    System.err.println("Exception when calling UserApi#createUsersWithListInput");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **user** | [**List&lt;User&gt;**](List.md)| List of user object |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: Not defined
+
+<a name="deleteUser"></a>
+# **deleteUser**
+> deleteUser(username)
+
+Delete user
+
+This can only be done by the logged in user.
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.UserApi;
+
+
+UserApi apiInstance = new UserApi();
+String username = "username_example"; // String | The name that needs to be deleted
+try {
+    apiInstance.deleteUser(username);
+} catch (ApiException e) {
+    System.err.println("Exception when calling UserApi#deleteUser");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **username** | **String**| The name that needs to be deleted |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: Not defined
+
+<a name="getUserByName"></a>
+# **getUserByName**
+> User getUserByName(username)
+
+Get user by user name
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.UserApi;
+
+
+UserApi apiInstance = new UserApi();
+String username = "username_example"; // String | The name that needs to be fetched. Use user1 for testing.
+try {
+    User result = apiInstance.getUserByName(username);
+    System.out.println(result);
+} catch (ApiException e) {
+    System.err.println("Exception when calling UserApi#getUserByName");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **username** | **String**| The name that needs to be fetched. Use user1 for testing. |
+
+### Return type
+
+[**User**](User.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/xml, application/json
+
+<a name="loginUser"></a>
+# **loginUser**
+> String loginUser(username, password)
+
+Logs user into the system
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.UserApi;
+
+
+UserApi apiInstance = new UserApi();
+String username = "username_example"; // String | The user name for login
+String password = "password_example"; // String | The password for login in clear text
+try {
+    String result = apiInstance.loginUser(username, password);
+    System.out.println(result);
+} catch (ApiException e) {
+    System.err.println("Exception when calling UserApi#loginUser");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **username** | **String**| The user name for login |
+ **password** | **String**| The password for login in clear text |
+
+### Return type
+
+**String**
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/xml, application/json
+
+<a name="logoutUser"></a>
+# **logoutUser**
+> logoutUser()
+
+Logs out current logged in user session
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.UserApi;
+
+
+UserApi apiInstance = new UserApi();
+try {
+    apiInstance.logoutUser();
+} catch (ApiException e) {
+    System.err.println("Exception when calling UserApi#logoutUser");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+This endpoint does not need any parameter.
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: Not defined
+
+<a name="updateUser"></a>
+# **updateUser**
+> updateUser(username, user)
+
+Updated user
+
+This can only be done by the logged in user.
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.UserApi;
+
+
+UserApi apiInstance = new UserApi();
+String username = "username_example"; // String | name that need to be deleted
+User user = new User(); // User | Updated user object
+try {
+    apiInstance.updateUser(username, user);
+} catch (ApiException e) {
+    System.err.println("Exception when calling UserApi#updateUser");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **username** | **String**| name that need to be deleted |
+ **user** | [**User**](User.md)| Updated user object |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: Not defined
+

samples/client/petstore/java/retrofit2-play26/git_push.sh

@@ -0,0 +1,52 @@
+#!/bin/sh
+# ref: https://help.github.com/articles/adding-an-existing-project-to-github-using-the-command-line/
+#
+# Usage example: /bin/sh ./git_push.sh wing328 openapi-pestore-perl "minor update"
+
+git_user_id=$1
+git_repo_id=$2
+release_note=$3
+
+if [ "$git_user_id" = "" ]; then
+    git_user_id="GIT_USER_ID"
+    echo "[INFO] No command line input provided. Set \$git_user_id to $git_user_id"
+fi
+
+if [ "$git_repo_id" = "" ]; then
+    git_repo_id="GIT_REPO_ID"
+    echo "[INFO] No command line input provided. Set \$git_repo_id to $git_repo_id"
+fi
+
+if [ "$release_note" = "" ]; then
+    release_note="Minor update"
+    echo "[INFO] No command line input provided. Set \$release_note to $release_note"
+fi
+
+# Initialize the local directory as a Git repository
+git init
+
+# Adds the files in the local repository and stages them for commit.
+git add .
+
+# Commits the tracked changes and prepares them to be pushed to a remote repository. 
+git commit -m "$release_note"
+
+# Sets the new remote
+git_remote=`git remote`
+if [ "$git_remote" = "" ]; then # git remote not defined
+
+    if [ "$GIT_TOKEN" = "" ]; then
+        echo "[INFO] \$GIT_TOKEN (environment variable) is not set. Using the git credential in your environment."
+        git remote add origin https://github.com/${git_user_id}/${git_repo_id}.git
+    else
+        git remote add origin https://${git_user_id}:${GIT_TOKEN}@github.com/${git_user_id}/${git_repo_id}.git
+    fi
+
+fi
+
+git pull origin master
+
+# Pushes (Forces) the changes in the local repository up to the remote repository
+echo "Git pushing to https://github.com/${git_user_id}/${git_repo_id}.git"
+git push origin master 2>&1 | grep -v 'To https'
+

samples/client/petstore/java/retrofit2-play26/gradle.properties

@@ -0,0 +1,2 @@
+# Uncomment to build for Android
+#target = android

samples/client/petstore/java/retrofit2-play26/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Tue May 17 23:08:05 CST 2016
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.6-bin.zip

samples/client/petstore/java/retrofit2-play26/gradlew

@@ -0,0 +1,160 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+esac
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"

samples/client/petstore/java/retrofit2-play26/gradlew.bat

@@ -0,0 +1,90 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+if "%@eval[2+2]" == "4" goto 4NT_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+goto execute
+
+:4NT_args
+@rem Get arguments from the 4NT Shell from JP Software
+set CMD_LINE_ARGS=%$
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

samples/client/petstore/java/retrofit2-play26/pom.xml

@@ -0,0 +1,295 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>org.openapitools</groupId>
+    <artifactId>petstore-java-client-retrofit2-play26</artifactId>
+    <packaging>jar</packaging>
+    <name>petstore-java-client-retrofit2-play26</name>
+    <version>1.0.0</version>
+    <url>https://github.com/openapitools/openapi-generator</url>
+    <description>OpenAPI Java</description>
+    <scm>
+        <connection>scm:git:git@github.com:openapitools/openapi-generator.git</connection>
+        <developerConnection>scm:git:git@github.com:openapitools/openapi-generator.git</developerConnection>
+        <url>https://github.com/openapitools/openapi-generator</url>
+    </scm>
+
+    <licenses>
+        <license>
+            <name>Unlicense</name>
+            <url>http://www.apache.org/licenses/LICENSE-2.0.html</url>
+            <distribution>repo</distribution>
+        </license>
+    </licenses>
+
+    <developers>
+        <developer>
+            <name>OpenAPI</name>
+            <email>team@openapitools.org</email>
+            <organization>OpenAPI</organization>
+            <organizationUrl>http://openapitools.org</organizationUrl>
+        </developer>
+    </developers>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-enforcer-plugin</artifactId>
+                <version>3.0.0-M1</version>
+                <executions>
+                    <execution>
+                        <id>enforce-maven</id>
+                        <goals>
+                            <goal>enforce</goal>
+                        </goals>
+                        <configuration>
+                            <rules>
+                                <requireMavenVersion>
+                                    <version>2.2.0</version>
+                                </requireMavenVersion>
+                            </rules>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>2.12</version>
+                <configuration>
+                    <systemProperties>
+                        <property>
+                            <name>loggerPath</name>
+                            <value>conf/log4j.properties</value>
+                        </property>
+                    </systemProperties>
+                    <argLine>-Xms512m -Xmx1500m</argLine>
+                    <parallel>methods</parallel>
+                    <forkMode>pertest</forkMode>
+                </configuration>
+            </plugin>
+            <plugin>
+                <artifactId>maven-dependency-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>copy-dependencies</goal>
+                        </goals>
+                        <configuration>
+                            <outputDirectory>${project.build.directory}/lib</outputDirectory>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+
+            <!-- attach test jar -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-jar-plugin</artifactId>
+                <version>2.2</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>jar</goal>
+                            <goal>test-jar</goal>
+                        </goals>
+                    </execution>
+                </executions>
+                <configuration>
+                </configuration>
+            </plugin>
+
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>build-helper-maven-plugin</artifactId>
+                <version>1.10</version>
+                <executions>
+                    <execution>
+                        <id>add_sources</id>
+                        <phase>generate-sources</phase>
+                        <goals>
+                            <goal>add-source</goal>
+                        </goals>
+                        <configuration>
+                            <sources>
+                                <source>
+                                src/main/java</source>
+                            </sources>
+                        </configuration>
+                    </execution>
+                    <execution>
+                        <id>add_test_sources</id>
+                        <phase>generate-test-sources</phase>
+                        <goals>
+                            <goal>add-test-source</goal>
+                        </goals>
+                        <configuration>
+                            <sources>
+                                <source>
+                                src/test/java</source>
+                            </sources>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-javadoc-plugin</artifactId>
+                <version>2.10.4</version>
+                <executions>
+                    <execution>
+                        <id>attach-javadocs</id>
+                        <goals>
+                            <goal>jar</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-source-plugin</artifactId>
+                <version>2.2.1</version>
+                <executions>
+                    <execution>
+                        <id>attach-sources</id>
+                        <goals>
+                            <goal>jar-no-fork</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+    <profiles>
+        <profile>
+            <id>sign-artifacts</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-gpg-plugin</artifactId>
+                        <version>1.5</version>
+                        <executions>
+                            <execution>
+                                <id>sign-artifacts</id>
+                                <phase>verify</phase>
+                                <goals>
+                                    <goal>sign</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+    </profiles>
+
+    <dependencies>
+        <dependency>
+            <groupId>io.swagger</groupId>
+            <artifactId>swagger-annotations</artifactId>
+            <version>${swagger-core-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.squareup.retrofit2</groupId>
+            <artifactId>converter-gson</artifactId>
+            <version>${retrofit-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.squareup.retrofit2</groupId>
+            <artifactId>retrofit</artifactId>
+            <version>${retrofit-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.squareup.retrofit2</groupId>
+            <artifactId>converter-scalars</artifactId>
+            <version>${retrofit-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.oltu.oauth2</groupId>
+            <artifactId>org.apache.oltu.oauth2.client</artifactId>
+            <version>${oltu-version}</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>org.apache.oltu.oauth2</groupId>
+                    <artifactId>common</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>io.gsonfire</groupId>
+            <artifactId>gson-fire</artifactId>
+            <version>${gson-fire-version}</version>
+        </dependency>
+            <dependency>
+                <groupId>org.threeten</groupId>
+                <artifactId>threetenbp</artifactId>
+                <version>${threetenbp-version}</version>
+            </dependency>
+
+            <!-- JSON processing: jackson -->
+            <dependency>
+                <groupId>com.squareup.retrofit2</groupId>
+                <artifactId>converter-jackson</artifactId>
+                <version>${retrofit-version}</version>
+            </dependency>
+            <dependency>
+                <groupId>com.fasterxml.jackson.core</groupId>
+                <artifactId>jackson-core</artifactId>
+                <version>${jackson-version}</version>
+            </dependency>
+            <dependency>
+                <groupId>com.fasterxml.jackson.core</groupId>
+                <artifactId>jackson-annotations</artifactId>
+                <version>${jackson-version}</version>
+            </dependency>
+            <dependency>
+                <groupId>com.fasterxml.jackson.core</groupId>
+                <artifactId>jackson-databind</artifactId>
+                <version>${jackson-version}</version>
+            </dependency>
+            <dependency>
+                <groupId>com.fasterxml.jackson.datatype</groupId>
+                <artifactId>jackson-datatype-jsr310</artifactId>
+                <version>${jackson-version}</version>
+            </dependency>
+
+            <dependency>
+                <groupId>com.typesafe.play</groupId>
+                <artifactId>play-ahc-ws_2.12</artifactId>
+                <version>${play-version}</version>
+            </dependency>
+            <dependency>
+                <groupId>javax.validation</groupId>
+                <artifactId>validation-api</artifactId>
+                <version>1.1.0.Final</version>
+            </dependency>
+
+
+
+        <!-- test dependencies -->
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>${junit-version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <java.version>1.8</java.version>
+        <maven.compiler.source>${java.version}</maven.compiler.source>
+        <maven.compiler.target>${java.version}</maven.compiler.target>
+        <gson-fire-version>1.8.0</gson-fire-version>
+        <swagger-core-version>1.5.18</swagger-core-version>
+                <jackson-version>2.8.10</jackson-version>
+                <play-version>2.6.7</play-version>
+        <retrofit-version>2.3.0</retrofit-version>
+            <threetenbp-version>1.3.5</threetenbp-version>
+        <oltu-version>1.0.1</oltu-version>
+        <junit-version>4.12</junit-version>
+    </properties>
+</project>

samples/client/petstore/java/retrofit2-play26/project/build.properties

@@ -0,0 +1 @@
+sbt.version=1.2.1

samples/client/petstore/java/retrofit2-play26/settings.gradle

@@ -0,0 +1 @@
+rootProject.name = "petstore-java-client-retrofit2-play26"

samples/client/petstore/java/retrofit2-play26/src/main/AndroidManifest.xml

@@ -0,0 +1,3 @@
+<manifest package="org.openapitools.client" xmlns:android="http://schemas.android.com/apk/res/android">
+    <application />
+</manifest>

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/ApiClient.java

@@ -0,0 +1,206 @@
+package org.openapitools.client;
+
+import java.io.File;
+import java.io.IOException;
+import java.lang.annotation.Annotation;
+import java.lang.reflect.Type;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.*;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import retrofit2.Converter;
+import retrofit2.Retrofit;
+import retrofit2.converter.scalars.ScalarsConverterFactory;
+import retrofit2.converter.jackson.JacksonConverterFactory;
+
+import play.libs.Json;
+import play.libs.ws.WSClient;
+
+import org.openapitools.client.Play26CallAdapterFactory;
+import org.openapitools.client.Play26CallFactory;
+
+import okhttp3.Interceptor;
+import okhttp3.ResponseBody;
+import org.openapitools.client.auth.ApiKeyAuth;
+import org.openapitools.client.auth.Authentication;
+
+/**
+ * API client
+ */
+public class ApiClient {
+
+    /** Underlying HTTP-client */
+    private WSClient wsClient;
+
+    /** Creates HTTP call instances */
+    private Play26CallFactory callFactory;
+
+    /** Create {@link java.util.concurrent.CompletionStage} instances from HTTP calls */
+    private Play26CallAdapterFactory callAdapterFactory;
+
+    /** Supported auths */
+    private Map<String, Authentication> authentications;
+
+    /** API base path */
+    private String basePath = "http://petstore.swagger.io:80/v2";
+
+    /** Default ObjectMapper */
+    private ObjectMapper defaultMapper;
+
+    public ApiClient(WSClient wsClient) {
+        this();
+        this.wsClient = wsClient;
+    }
+
+    public ApiClient() {
+        // Setup authentications (key: authentication name, value: authentication).
+        authentications = new HashMap<>();
+        authentications.put("api_key", new ApiKeyAuth("header", "api_key"));
+        authentications.put("api_key_query", new ApiKeyAuth("query", "api_key_query"));
+        // authentications.put("http_basic_test", new HttpBasicAuth());
+        // authentications.put("petstore_auth", new OAuth());
+        // Prevent the authentications from being modified.
+        authentications = Collections.unmodifiableMap(authentications);
+    }
+
+    /**
+     * Creates a retrofit2 client for given API interface
+     */
+    public <S> S createService(Class<S> serviceClass) {
+        if(!basePath.endsWith("/")) {
+            basePath = basePath + "/";
+        }
+
+        Map<String, String> extraHeaders = new HashMap<>();
+        List<Pair> extraQueryParams = new ArrayList<>();
+
+        for (String authName : authentications.keySet()) {
+            Authentication auth = authentications.get(authName);
+            if (auth == null) throw new RuntimeException("Authentication undefined: " + authName);
+
+            auth.applyToParams(extraQueryParams, extraHeaders);
+        }
+
+        if (callFactory == null) {
+            callFactory = new Play26CallFactory(wsClient, extraHeaders, extraQueryParams);
+        }
+        if (callAdapterFactory == null) {
+            callAdapterFactory = new Play26CallAdapterFactory();
+        }
+        if (defaultMapper == null) {
+            defaultMapper = Json.mapper();
+        }
+
+        return new Retrofit.Builder()
+                        .baseUrl(basePath)
+                        .addConverterFactory(new FileConverter())
+                        .addConverterFactory(ScalarsConverterFactory.create())
+                        .addConverterFactory(JacksonConverterFactory.create(defaultMapper))
+                        .callFactory(callFactory)
+                        .addCallAdapterFactory(callAdapterFactory)
+                        .build()
+                        .create(serviceClass);
+    }
+
+    /**
+     * Helper method to set API base path
+     */
+    public ApiClient setBasePath(String basePath) {
+        this.basePath = basePath;
+        return this;
+    }
+
+    /**
+     * Get authentications (key: authentication name, value: authentication).
+     */
+    public Map<String, Authentication> getAuthentications() {
+        return authentications;
+    }
+
+    /**
+     * Get authentication for the given name.
+     *
+     * @param authName The authentication name
+     * @return The authentication, null if not found
+     */
+    public Authentication getAuthentication(String authName) {
+        return authentications.get(authName);
+    }
+
+    /**
+     * Helper method to set API key value for the first API key authentication.
+     */
+    public ApiClient setApiKey(String apiKey) {
+        for (Authentication auth : authentications.values()) {
+            if (auth instanceof ApiKeyAuth) {
+                ((ApiKeyAuth) auth).setApiKey(apiKey);
+                return this;
+            }
+        }
+
+        throw new RuntimeException("No API key authentication configured!");
+    }
+
+    /**
+     * Helper method to set API key prefix for the first API key authentication.
+     */
+    public ApiClient setApiKeyPrefix(String apiKeyPrefix) {
+        for (Authentication auth : authentications.values()) {
+            if (auth instanceof ApiKeyAuth) {
+                ((ApiKeyAuth) auth).setApiKeyPrefix(apiKeyPrefix);
+                return this;
+            }
+        }
+
+        throw new RuntimeException("No API key authentication configured!");
+    }
+
+    /**
+     * Helper method to set HTTP call instances factory
+     */
+    public ApiClient setCallFactory(Play26CallFactory callFactory) {
+        this.callFactory = callFactory;
+        return this;
+    }
+
+    /**
+     * Helper method to set {@link java.util.concurrent.CompletionStage} instances factory
+     */
+    public ApiClient setCallAdapterFactory(Play26CallAdapterFactory callAdapterFactory) {
+        this.callAdapterFactory = callAdapterFactory;
+        return this;
+    }
+
+    /**
+     * Helper method to set Jackson's {@link ObjectMapper}
+     */
+    public ApiClient setObjectMapper(ObjectMapper mapper) {
+        this.defaultMapper = mapper;
+        return this;
+    }
+
+    static class FileConverter extends Converter.Factory {
+
+        @Override
+        public Converter<ResponseBody, File> responseBodyConverter(Type type,
+                Annotation[] annotations, Retrofit retrofit) {
+
+            if (!File.class.getTypeName().equals(type.getTypeName())) {
+                return null;
+            }
+
+            return new Converter<ResponseBody, File>() {
+
+                @Override
+                public File convert(ResponseBody value) throws IOException {
+
+                    File file = File.createTempFile("retrofit-file", ".tmp");
+                    Files.write(Paths.get(file.getPath()), value.bytes());
+                    return file;
+                }
+            };
+        }
+    }
+
+}

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/CollectionFormats.java

@@ -0,0 +1,95 @@
+package org.openapitools.client;
+
+import java.util.Arrays;
+import java.util.List;
+
+public class CollectionFormats {
+
+    public static class CSVParams {
+
+        protected List<String> params;
+
+        public CSVParams() {
+        }
+
+        public CSVParams(List<String> params) {
+            this.params = params;
+        }
+
+        public CSVParams(String... params) {
+            this.params = Arrays.asList(params);
+        }
+
+        public List<String> getParams() {
+            return params;
+        }
+
+        public void setParams(List<String> params) {
+            this.params = params;
+        }
+
+        @Override
+        public String toString() {
+            return StringUtil.join(params.toArray(new String[0]), ",");
+        }
+
+    }
+
+    public static class SSVParams extends CSVParams {
+
+        public SSVParams() {
+        }
+
+        public SSVParams(List<String> params) {
+            super(params);
+        }
+
+        public SSVParams(String... params) {
+            super(params);
+        }
+
+        @Override
+        public String toString() {
+            return StringUtil.join(params.toArray(new String[0]), " ");
+        }
+    }
+
+    public static class TSVParams extends CSVParams {
+
+        public TSVParams() {
+        }
+
+        public TSVParams(List<String> params) {
+            super(params);
+        }
+
+        public TSVParams(String... params) {
+            super(params);
+        }
+
+        @Override
+        public String toString() {
+            return StringUtil.join( params.toArray(new String[0]), "\t");
+        }
+    }
+
+    public static class PIPESParams extends CSVParams {
+
+        public PIPESParams() {
+        }
+
+        public PIPESParams(List<String> params) {
+            super(params);
+        }
+
+        public PIPESParams(String... params) {
+            super(params);
+        }
+
+        @Override
+        public String toString() {
+            return StringUtil.join(params.toArray(new String[0]), "|");
+        }
+    }
+
+}

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/Pair.java

@@ -0,0 +1,52 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client;
+
+
+public class Pair {
+    private String name = "";
+    private String value = "";
+
+    public Pair (String name, String value) {
+        setName(name);
+        setValue(value);
+    }
+
+    private void setName(String name) {
+        if (!isValidString(name)) return;
+
+        this.name = name;
+    }
+
+    private void setValue(String value) {
+        if (!isValidString(value)) return;
+
+        this.value = value;
+    }
+
+    public String getName() {
+        return this.name;
+    }
+
+    public String getValue() {
+        return this.value;
+    }
+
+    private boolean isValidString(String arg) {
+        if (arg == null) return false;
+        if (arg.trim().isEmpty()) return false;
+
+        return true;
+    }
+}

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/Play26CallAdapterFactory.java

@@ -0,0 +1,116 @@
+package org.openapitools.client;
+
+import java.util.concurrent.CompletionStage;
+import retrofit2.*;
+
+import java.lang.annotation.Annotation;
+import java.lang.reflect.ParameterizedType;
+import java.lang.reflect.Type;
+import java.lang.reflect.WildcardType;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionStage;
+import java.util.function.Function;
+
+/**
+ * Creates {@link CallAdapter} instances that convert {@link Call} into {@link java.util.concurrent.CompletionStage}
+ */
+public class Play26CallAdapterFactory extends CallAdapter.Factory {
+
+    private Function<RuntimeException, RuntimeException> exceptionConverter = Function.identity();
+
+    public Play26CallAdapterFactory() {
+    }
+
+    public Play26CallAdapterFactory(
+            Function<RuntimeException, RuntimeException> exceptionConverter) {
+        this.exceptionConverter = exceptionConverter;
+    }
+
+    @Override
+    public CallAdapter<?, ?> get(Type returnType, Annotation[] annotations, Retrofit retrofit) {
+        if (!(returnType instanceof ParameterizedType)) {
+            return null;
+        }
+
+        ParameterizedType type = (ParameterizedType) returnType;
+        if (type.getRawType() != CompletionStage.class) {
+            return null;
+        }
+
+        return createAdapter((ParameterizedType) returnType);
+    }
+
+    private CallAdapter<?, CompletionStage<?>> createAdapter(ParameterizedType returnType) {
+        // Get CompletionStage type argument
+        Type[] types = returnType.getActualTypeArguments();
+        if (types.length != 1) {
+            throw new IllegalStateException("Must be exactly one type parameter");
+        }
+
+        Type resultType = types[0];
+        Class<?> rawTypeParam = getRawType(resultType);
+
+        boolean includeResponse = false;
+        if (rawTypeParam == Response.class) {
+            if (!(resultType instanceof ParameterizedType)) {
+                throw new IllegalStateException("Response must be parameterized"
+                        + " as Response<T>");
+            }
+            resultType = ((ParameterizedType) resultType).getActualTypeArguments()[0];
+            includeResponse = true;
+        }
+
+        return new ValueAdapter(resultType, includeResponse, exceptionConverter);
+    }
+
+    /**
+     * Adpater that coverts values returned by API interface into CompletionStage
+     */
+    private static final class ValueAdapter<R> implements CallAdapter<R, CompletionStage<R>> {
+
+        private final Type responseType;
+        private final boolean includeResponse;
+        private Function<RuntimeException, RuntimeException> exceptionConverter;
+
+        ValueAdapter(Type responseType, boolean includeResponse,
+                     Function<RuntimeException, RuntimeException> exceptionConverter) {
+            this.responseType = responseType;
+            this.includeResponse = includeResponse;
+            this.exceptionConverter = exceptionConverter;
+        }
+
+        @Override
+        public Type responseType() {
+            return responseType;
+        }
+
+        @Override
+        public CompletionStage<R> adapt(final Call<R> call) {
+            final CompletableFuture<R> promise = new CompletableFuture();
+
+            call.enqueue(new Callback<R>() {
+
+                @Override
+                public void onResponse(Call<R> call, Response<R> response) {
+                    if (response.isSuccessful()) {
+                        if (includeResponse) {
+                            promise.complete((R) response);
+                        } else {
+                            promise.complete(response.body());
+                        }
+                    } else {
+                        promise.completeExceptionally(exceptionConverter.apply(new HttpException(response)));
+                    }
+                }
+
+                @Override
+                public void onFailure(Call<R> call, Throwable t) {
+                    promise.completeExceptionally(t);
+                }
+
+            });
+
+            return promise;
+        }
+    }
+}

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/Play26CallFactory.java

@@ -0,0 +1,245 @@
+package org.openapitools.client;
+
+import okhttp3.*;
+import okio.Buffer;
+import okio.BufferedSource;
+import play.libs.ws.WSClient;
+import play.libs.ws.WSRequest;
+import play.libs.ws.WSResponse;
+import play.libs.ws.WSRequestFilter;
+
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.CompletionStage;
+import java.util.concurrent.Executor;
+
+/**
+ * Creates {@link Call} instances that invoke underlying {@link WSClient}
+ */
+public class Play26CallFactory implements okhttp3.Call.Factory {
+
+    /** PlayWS http client */
+    private final WSClient wsClient;
+
+    /** Extra headers to add to request */
+    private Map<String, String> extraHeaders = new HashMap<>();
+
+    /** Extra query parameters to add to request */
+    private List<Pair> extraQueryParams = new ArrayList<>();
+
+    /** Filters (interceptors) */
+    private List<WSRequestFilter> filters = new ArrayList<>();
+
+    /** Executor for WSClient */
+    private Executor executor;
+
+    public Play26CallFactory(WSClient wsClient) {
+        this.wsClient = wsClient;
+    }
+
+    public Play26CallFactory(WSClient wsClient, List<WSRequestFilter> filters) {
+        this.wsClient = wsClient;
+        this.filters.addAll(filters);
+    }
+
+    public Play26CallFactory(WSClient wsClient, Map<String, String> extraHeaders,
+        List<Pair> extraQueryParams) {
+        this.wsClient = wsClient;
+
+        this.extraHeaders.putAll(extraHeaders);
+        this.extraQueryParams.addAll(extraQueryParams);
+    }
+
+    public Play26CallFactory withExecutor(Executor executor) {
+        this.executor = executor;
+        return this;
+    }
+
+    @Override
+    public Call newCall(Request request) {
+        // add extra headers
+        Request.Builder rb = request.newBuilder();
+        for (Map.Entry<String, String> header : this.extraHeaders.entrySet()) {
+            rb.addHeader(header.getKey(), header.getValue());
+        }
+
+        // add extra query params
+        if (!this.extraQueryParams.isEmpty()) {
+            String newQuery = request.url().uri().getQuery();
+            for (Pair queryParam : this.extraQueryParams) {
+                String param = String.format("%s=%s", queryParam.getName(), queryParam.getValue());
+                if (newQuery == null) {
+                    newQuery = param;
+                } else {
+                    newQuery += "&" + param;
+                }
+            }
+
+            URI newUri;
+            try {
+                newUri = new URI(request.url().uri().getScheme(), request.url().uri().getAuthority(),
+                        request.url().uri().getPath(), newQuery, request.url().uri().getFragment());
+                rb.url(newUri.toURL());
+            } catch (MalformedURLException | URISyntaxException e) {
+                throw new RuntimeException("Error while updating an url", e);
+            }
+        }
+
+        return new PlayWSCall(wsClient, this.executor, this.filters, rb.build());
+    }
+
+    /**
+     * Call implementation that delegates to Play WS Client
+     */
+    static class PlayWSCall implements Call {
+
+        private final WSClient wsClient;
+        private WSRequest wsRequest;
+        private List<WSRequestFilter> filters;
+        private Executor executor = java.util.concurrent.ForkJoinPool.commonPool();
+
+        private final Request request;
+
+        public PlayWSCall(WSClient wsClient, Executor executor, List<WSRequestFilter> filters, Request request) {
+            this.wsClient = wsClient;
+            this.request = request;
+            this.filters = filters;
+
+            if (executor != null) {
+                this.executor = executor;
+            }
+        }
+
+        @Override
+        public Request request() {
+            return request;
+        }
+
+        @Override
+        public void enqueue(final okhttp3.Callback responseCallback) {
+            final Call call = this;
+            final CompletionStage<WSResponse> promise = executeAsync();
+
+            promise.whenCompleteAsync((v, t) -> {
+                if (t != null) {
+                    if (t instanceof IOException) {
+                        responseCallback.onFailure(call, (IOException) t);
+                    } else {
+                        responseCallback.onFailure(call, new IOException(t));
+                    }
+                } else {
+                    try {
+                        responseCallback.onResponse(call, PlayWSCall.this.toWSResponse(v));
+                    } catch (Exception e) {
+                        responseCallback.onFailure(call, new IOException(e));
+                    }
+                }
+            }, this.executor);
+        }
+
+        CompletionStage<WSResponse> executeAsync() {
+            try {
+                HttpUrl url = request.url();
+                wsRequest = wsClient.url(url.scheme()+ "://" + url.host() + ":" + url.port() + url.encodedPath());
+                url.queryParameterNames().forEach(queryParam -> {
+                    wsRequest.addQueryParameter(queryParam, url.queryParameter(queryParam));
+                });
+                addHeaders(wsRequest);
+                if (request.body() != null) {
+                    addBody(wsRequest);
+                }
+                filters.stream().forEach(f -> wsRequest.setRequestFilter(f));
+
+                return wsRequest.execute(request.method());
+            } catch (Exception e) {
+                throw new RuntimeException(e.getMessage(), e);
+            }
+        }
+
+        private void addHeaders(WSRequest wsRequest) {
+            for(Map.Entry<String, List<String>> entry : request.headers().toMultimap().entrySet()) {
+                List<String> values = entry.getValue();
+                for (String value : values) {
+                    wsRequest.setHeader(entry.getKey(), value);
+                }
+            }
+        }
+
+        private void addBody(WSRequest wsRequest) throws IOException {
+            MediaType mediaType = request.body().contentType();
+            if (mediaType != null) {
+                wsRequest.setContentType(mediaType.toString());
+            }
+
+            Buffer buffer = new Buffer();
+            request.body().writeTo(buffer);
+            wsRequest.setBody(buffer.inputStream());
+        }
+
+        private Response toWSResponse(final WSResponse r) {
+            final Response.Builder builder = new Response.Builder();
+            builder.request(request)
+                   .code(r.getStatus())
+                   .body(new ResponseBody() {
+
+                       @Override
+                       public MediaType contentType() {
+                          return r.getSingleHeader("Content-Type")
+                                  .map(MediaType::parse)
+                                  .orElse(null);
+                       }
+
+                       @Override
+                       public long contentLength() {
+                           return r.asByteArray().length;
+                       }
+
+                       @Override
+                       public BufferedSource source() {
+                           return new Buffer().write(r.asByteArray());
+                       }
+                   });
+
+            for (Map.Entry<String, List<String>> entry : r.getAllHeaders().entrySet()) {
+                for (String value : entry.getValue()) {
+                    builder.addHeader(entry.getKey(), value);
+                }
+            }
+
+            builder.message(r.getStatusText());
+            builder.protocol(Protocol.HTTP_1_1);
+            return builder.build();
+        }
+
+        @Override
+        public Response execute() throws IOException {
+            throw new UnsupportedOperationException("Not supported");
+        }
+
+        @Override
+        public void cancel() {
+            throw new UnsupportedOperationException("Not supported");
+        }
+
+        @Override
+        public PlayWSCall clone() {
+            throw new UnsupportedOperationException("Not supported");
+        }
+
+        @Override
+        public boolean isExecuted() {
+            return false;
+        }
+
+        @Override
+        public boolean isCanceled() {
+            return false;
+        }
+    }
+}

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/RFC3339DateFormat.java

@@ -0,0 +1,32 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.client;
+
+import com.fasterxml.jackson.databind.util.ISO8601DateFormat;
+import com.fasterxml.jackson.databind.util.ISO8601Utils;
+
+import java.text.FieldPosition;
+import java.util.Date;
+
+
+public class RFC3339DateFormat extends ISO8601DateFormat {
+
+  // Same as ISO8601DateFormat but serializing milliseconds.
+  @Override
+  public StringBuffer format(Date date, StringBuffer toAppendTo, FieldPosition fieldPosition) {
+    String value = ISO8601Utils.format(date, true);
+    toAppendTo.append(value);
+    return toAppendTo;
+  }
+
+}

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/StringUtil.java

@@ -0,0 +1,55 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client;
+
+
+public class StringUtil {
+  /**
+   * Check if the given array contains the given value (with case-insensitive comparison).
+   *
+   * @param array The array
+   * @param value The value to search
+   * @return true if the array contains the value
+   */
+  public static boolean containsIgnoreCase(String[] array, String value) {
+    for (String str : array) {
+      if (value == null && str == null) return true;
+      if (value != null && value.equalsIgnoreCase(str)) return true;
+    }
+    return false;
+  }
+
+  /**
+   * Join an array of strings with the given separator.
+   * <p>
+   * Note: This might be replaced by utility method from commons-lang or guava someday
+   * if one of those libraries is added as dependency.
+   * </p>
+   *
+   * @param array     The array of strings
+   * @param separator The separator
+   * @return the resulting string
+   */
+  public static String join(String[] array, String separator) {
+    int len = array.length;
+    if (len == 0) return "";
+
+    StringBuilder out = new StringBuilder();
+    out.append(array[0]);
+    for (int i = 1; i < len; i++) {
+      out.append(separator).append(array[i]);
+    }
+    return out.toString();
+  }
+}

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/AnotherFakeApi.java

@@ -0,0 +1,39 @@
+package org.openapitools.client.api;
+
+import org.openapitools.client.CollectionFormats.*;
+
+
+
+import retrofit2.Call;
+import retrofit2.http.*;
+
+import okhttp3.RequestBody;
+import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;
+
+import org.openapitools.client.model.Client;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import java.util.concurrent.*;
+import retrofit2.Response;
+
+public interface AnotherFakeApi {
+  /**
+   * To test special tags
+   * To test special tags and operation ID starting with number
+   * @param client client model (required)
+   * @return Call<Client>
+   */
+  @Headers({
+    "Content-Type:application/json"
+  })
+  @PATCH("another-fake/dummy")
+  CompletionStage<Response<Client>> call123testSpecialTags(
+    @retrofit2.http.Body Client client
+  );
+
+}

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/FakeApi.java

@@ -0,0 +1,190 @@
+package org.openapitools.client.api;
+
+import org.openapitools.client.CollectionFormats.*;
+
+
+
+import retrofit2.Call;
+import retrofit2.http.*;
+
+import okhttp3.RequestBody;
+import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;
+
+import java.math.BigDecimal;
+import org.openapitools.client.model.Client;
+import java.io.File;
+import org.openapitools.client.model.FileSchemaTestClass;
+import org.threeten.bp.LocalDate;
+import org.threeten.bp.OffsetDateTime;
+import org.openapitools.client.model.OuterComposite;
+import org.openapitools.client.model.User;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import java.util.concurrent.*;
+import retrofit2.Response;
+
+public interface FakeApi {
+  /**
+   * 
+   * Test serialization of outer boolean types
+   * @param body Input boolean as post body (optional)
+   * @return Call<Boolean>
+   */
+  @POST("fake/outer/boolean")
+  CompletionStage<Response<Boolean>> fakeOuterBooleanSerialize(
+    @retrofit2.http.Body Boolean body
+  );
+
+  /**
+   * 
+   * Test serialization of object with outer number type
+   * @param outerComposite Input composite as post body (optional)
+   * @return Call&lt;OuterComposite&gt;
+   */
+  @POST("fake/outer/composite")
+  CompletionStage<Response<OuterComposite>> fakeOuterCompositeSerialize(
+    @retrofit2.http.Body OuterComposite outerComposite
+  );
+
+  /**
+   * 
+   * Test serialization of outer number types
+   * @param body Input number as post body (optional)
+   * @return Call&lt;BigDecimal&gt;
+   */
+  @POST("fake/outer/number")
+  CompletionStage<Response<BigDecimal>> fakeOuterNumberSerialize(
+    @retrofit2.http.Body BigDecimal body
+  );
+
+  /**
+   * 
+   * Test serialization of outer string types
+   * @param body Input string as post body (optional)
+   * @return Call&lt;String&gt;
+   */
+  @POST("fake/outer/string")
+  CompletionStage<Response<String>> fakeOuterStringSerialize(
+    @retrofit2.http.Body String body
+  );
+
+  /**
+   * 
+   * For this test, the body for this request much reference a schema named &#x60;File&#x60;.
+   * @param fileSchemaTestClass  (required)
+   * @return Call&lt;Void&gt;
+   */
+  @Headers({
+    "Content-Type:application/json"
+  })
+  @PUT("fake/body-with-file-schema")
+  CompletionStage<Response<Void>> testBodyWithFileSchema(
+    @retrofit2.http.Body FileSchemaTestClass fileSchemaTestClass
+  );
+
+  /**
+   * 
+   * 
+   * @param query  (required)
+   * @param user  (required)
+   * @return Call&lt;Void&gt;
+   */
+  @Headers({
+    "Content-Type:application/json"
+  })
+  @PUT("fake/body-with-query-params")
+  CompletionStage<Response<Void>> testBodyWithQueryParams(
+    @retrofit2.http.Query("query") String query, @retrofit2.http.Body User user
+  );
+
+  /**
+   * To test \&quot;client\&quot; model
+   * To test \&quot;client\&quot; model
+   * @param client client model (required)
+   * @return Call&lt;Client&gt;
+   */
+  @Headers({
+    "Content-Type:application/json"
+  })
+  @PATCH("fake")
+  CompletionStage<Response<Client>> testClientModel(
+    @retrofit2.http.Body Client client
+  );
+
+  /**
+   * Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
+   * Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
+   * @param number None (required)
+   * @param _double None (required)
+   * @param patternWithoutDelimiter None (required)
+   * @param _byte None (required)
+   * @param integer None (optional, default to null)
+   * @param int32 None (optional, default to null)
+   * @param int64 None (optional, default to null)
+   * @param _float None (optional, default to null)
+   * @param string None (optional, default to null)
+   * @param binary None (optional, default to null)
+   * @param date None (optional, default to null)
+   * @param dateTime None (optional, default to null)
+   * @param password None (optional, default to null)
+   * @param paramCallback None (optional, default to null)
+   * @return Call&lt;Void&gt;
+   */
+  @retrofit2.http.FormUrlEncoded
+  @POST("fake")
+  CompletionStage<Response<Void>> testEndpointParameters(
+    @retrofit2.http.Field("number") BigDecimal number, @retrofit2.http.Field("double") Double _double, @retrofit2.http.Field("pattern_without_delimiter") String patternWithoutDelimiter, @retrofit2.http.Field("byte") byte[] _byte, @retrofit2.http.Field("integer") Integer integer, @retrofit2.http.Field("int32") Integer int32, @retrofit2.http.Field("int64") Long int64, @retrofit2.http.Field("float") Float _float, @retrofit2.http.Field("string") String string, @retrofit2.http.Field("binary") MultipartBody.Part binary, @retrofit2.http.Field("date") LocalDate date, @retrofit2.http.Field("dateTime") OffsetDateTime dateTime, @retrofit2.http.Field("password") String password, @retrofit2.http.Field("callback") String paramCallback
+  );
+
+  /**
+   * To test enum parameters
+   * To test enum parameters
+   * @param enumHeaderStringArray Header parameter enum test (string array) (optional)
+   * @param enumHeaderString Header parameter enum test (string) (optional, default to -efg)
+   * @param enumQueryStringArray Query parameter enum test (string array) (optional)
+   * @param enumQueryString Query parameter enum test (string) (optional, default to -efg)
+   * @param enumQueryInteger Query parameter enum test (double) (optional)
+   * @param enumQueryDouble Query parameter enum test (double) (optional)
+   * @param enumFormStringArray Form parameter enum test (string array) (optional, default to $)
+   * @param enumFormString Form parameter enum test (string) (optional, default to -efg)
+   * @return Call&lt;Void&gt;
+   */
+  @retrofit2.http.FormUrlEncoded
+  @GET("fake")
+  CompletionStage<Response<Void>> testEnumParameters(
+    @retrofit2.http.Header("enum_header_string_array") List<String> enumHeaderStringArray, @retrofit2.http.Header("enum_header_string") String enumHeaderString, @retrofit2.http.Query("enum_query_string_array") CSVParams enumQueryStringArray, @retrofit2.http.Query("enum_query_string") String enumQueryString, @retrofit2.http.Query("enum_query_integer") Integer enumQueryInteger, @retrofit2.http.Query("enum_query_double") Double enumQueryDouble, @retrofit2.http.Field("enum_form_string_array") List<String> enumFormStringArray, @retrofit2.http.Field("enum_form_string") String enumFormString
+  );
+
+  /**
+   * test inline additionalProperties
+   * 
+   * @param requestBody request body (required)
+   * @return Call&lt;Void&gt;
+   */
+  @Headers({
+    "Content-Type:application/json"
+  })
+  @POST("fake/inline-additionalProperties")
+  CompletionStage<Response<Void>> testInlineAdditionalProperties(
+    @retrofit2.http.Body Map<String, String> requestBody
+  );
+
+  /**
+   * test json serialization of form data
+   * 
+   * @param param field1 (required)
+   * @param param2 field2 (required)
+   * @return Call&lt;Void&gt;
+   */
+  @retrofit2.http.FormUrlEncoded
+  @GET("fake/jsonFormData")
+  CompletionStage<Response<Void>> testJsonFormData(
+    @retrofit2.http.Field("param") String param, @retrofit2.http.Field("param2") String param2
+  );
+
+}

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java

@@ -0,0 +1,39 @@
+package org.openapitools.client.api;
+
+import org.openapitools.client.CollectionFormats.*;
+
+
+
+import retrofit2.Call;
+import retrofit2.http.*;
+
+import okhttp3.RequestBody;
+import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;
+
+import org.openapitools.client.model.Client;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import java.util.concurrent.*;
+import retrofit2.Response;
+
+public interface FakeClassnameTags123Api {
+  /**
+   * To test class name in snake case
+   * To test class name in snake case
+   * @param client client model (required)
+   * @return Call<Client>
+   */
+  @Headers({
+    "Content-Type:application/json"
+  })
+  @PATCH("fake_classname_test")
+  CompletionStage<Response<Client>> testClassname(
+    @retrofit2.http.Body Client client
+  );
+
+}

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/PetApi.java

@@ -0,0 +1,142 @@
+package org.openapitools.client.api;
+
+import org.openapitools.client.CollectionFormats.*;
+
+
+
+import retrofit2.Call;
+import retrofit2.http.*;
+
+import okhttp3.RequestBody;
+import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;
+
+import java.io.File;
+import org.openapitools.client.model.ModelApiResponse;
+import org.openapitools.client.model.Pet;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import java.util.concurrent.*;
+import retrofit2.Response;
+
+public interface PetApi {
+  /**
+   * Add a new pet to the store
+   * 
+   * @param pet Pet object that needs to be added to the store (required)
+   * @return Call<Void>
+   */
+  @Headers({
+    "Content-Type:application/json"
+  })
+  @POST("pet")
+  CompletionStage<Response<Void>> addPet(
+    @retrofit2.http.Body Pet pet
+  );
+
+  /**
+   * Deletes a pet
+   * 
+   * @param petId Pet id to delete (required)
+   * @param apiKey  (optional)
+   * @return Call&lt;Void&gt;
+   */
+  @DELETE("pet/{petId}")
+  CompletionStage<Response<Void>> deletePet(
+    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Header("api_key") String apiKey
+  );
+
+  /**
+   * Finds Pets by status
+   * Multiple status values can be provided with comma separated strings
+   * @param status Status values that need to be considered for filter (required)
+   * @return Call&lt;List&lt;Pet&gt;&gt;
+   */
+  @GET("pet/findByStatus")
+  CompletionStage<Response<List<Pet>>> findPetsByStatus(
+    @retrofit2.http.Query("status") CSVParams status
+  );
+
+  /**
+   * Finds Pets by tags
+   * Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+   * @param tags Tags to filter by (required)
+   * @return Call&lt;List&lt;Pet&gt;&gt;
+   */
+  @GET("pet/findByTags")
+  CompletionStage<Response<List<Pet>>> findPetsByTags(
+    @retrofit2.http.Query("tags") CSVParams tags
+  );
+
+  /**
+   * Find pet by ID
+   * Returns a single pet
+   * @param petId ID of pet to return (required)
+   * @return Call&lt;Pet&gt;
+   */
+  @GET("pet/{petId}")
+  CompletionStage<Response<Pet>> getPetById(
+    @retrofit2.http.Path("petId") Long petId
+  );
+
+  /**
+   * Update an existing pet
+   * 
+   * @param pet Pet object that needs to be added to the store (required)
+   * @return Call&lt;Void&gt;
+   */
+  @Headers({
+    "Content-Type:application/json"
+  })
+  @PUT("pet")
+  CompletionStage<Response<Void>> updatePet(
+    @retrofit2.http.Body Pet pet
+  );
+
+  /**
+   * Updates a pet in the store with form data
+   * 
+   * @param petId ID of pet that needs to be updated (required)
+   * @param name Updated name of the pet (optional, default to null)
+   * @param status Updated status of the pet (optional, default to null)
+   * @return Call&lt;Void&gt;
+   */
+  @retrofit2.http.FormUrlEncoded
+  @POST("pet/{petId}")
+  CompletionStage<Response<Void>> updatePetWithForm(
+    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Field("name") String name, @retrofit2.http.Field("status") String status
+  );
+
+  /**
+   * uploads an image
+   * 
+   * @param petId ID of pet to update (required)
+   * @param additionalMetadata Additional data to pass to server (optional, default to null)
+   * @param file file to upload (optional, default to null)
+   * @return Call&lt;ModelApiResponse&gt;
+   */
+  @retrofit2.http.Multipart
+  @POST("pet/{petId}/uploadImage")
+  CompletionStage<Response<ModelApiResponse>> uploadFile(
+    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Part("additionalMetadata") String additionalMetadata, @retrofit2.http.Part("file") MultipartBody.Part file
+  );
+
+  /**
+   * uploads an image (required)
+   * 
+   * @param petId ID of pet to update (required)
+   * @param requiredFile file to upload (required)
+   * @param additionalMetadata Additional data to pass to server (optional, default to null)
+   * @return Call&lt;ModelApiResponse&gt;
+   */
+  @retrofit2.http.Multipart
+  @POST("fake/{petId}/uploadImageWithRequiredFile")
+  CompletionStage<Response<ModelApiResponse>> uploadFileWithRequiredFile(
+    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Part("requiredFile") MultipartBody.Part requiredFile, @retrofit2.http.Part("additionalMetadata") String additionalMetadata
+  );
+
+}

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/StoreApi.java

@@ -0,0 +1,67 @@
+package org.openapitools.client.api;
+
+import org.openapitools.client.CollectionFormats.*;
+
+
+
+import retrofit2.Call;
+import retrofit2.http.*;
+
+import okhttp3.RequestBody;
+import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;
+
+import org.openapitools.client.model.Order;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import java.util.concurrent.*;
+import retrofit2.Response;
+
+public interface StoreApi {
+  /**
+   * Delete purchase order by ID
+   * For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors
+   * @param orderId ID of the order that needs to be deleted (required)
+   * @return Call<Void>
+   */
+  @DELETE("store/order/{order_id}")
+  CompletionStage<Response<Void>> deleteOrder(
+    @retrofit2.http.Path("order_id") String orderId
+  );
+
+  /**
+   * Returns pet inventories by status
+   * Returns a map of status codes to quantities
+   * @return Call&lt;Map&lt;String, Integer&gt;&gt;
+   */
+  @GET("store/inventory")
+  CompletionStage<Response<Map<String, Integer>>> getInventory();
+    
+
+  /**
+   * Find purchase order by ID
+   * For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
+   * @param orderId ID of pet that needs to be fetched (required)
+   * @return Call&lt;Order&gt;
+   */
+  @GET("store/order/{order_id}")
+  CompletionStage<Response<Order>> getOrderById(
+    @retrofit2.http.Path("order_id") Long orderId
+  );
+
+  /**
+   * Place an order for a pet
+   * 
+   * @param order order placed for purchasing the pet (required)
+   * @return Call&lt;Order&gt;
+   */
+  @POST("store/order")
+  CompletionStage<Response<Order>> placeOrder(
+    @retrofit2.http.Body Order order
+  );
+
+}

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/UserApi.java

@@ -0,0 +1,113 @@
+package org.openapitools.client.api;
+
+import org.openapitools.client.CollectionFormats.*;
+
+
+
+import retrofit2.Call;
+import retrofit2.http.*;
+
+import okhttp3.RequestBody;
+import okhttp3.ResponseBody;
+import okhttp3.MultipartBody;
+
+import org.openapitools.client.model.User;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import java.util.concurrent.*;
+import retrofit2.Response;
+
+public interface UserApi {
+  /**
+   * Create user
+   * This can only be done by the logged in user.
+   * @param user Created user object (required)
+   * @return Call<Void>
+   */
+  @POST("user")
+  CompletionStage<Response<Void>> createUser(
+    @retrofit2.http.Body User user
+  );
+
+  /**
+   * Creates list of users with given input array
+   * 
+   * @param user List of user object (required)
+   * @return Call&lt;Void&gt;
+   */
+  @POST("user/createWithArray")
+  CompletionStage<Response<Void>> createUsersWithArrayInput(
+    @retrofit2.http.Body List<User> user
+  );
+
+  /**
+   * Creates list of users with given input array
+   * 
+   * @param user List of user object (required)
+   * @return Call&lt;Void&gt;
+   */
+  @POST("user/createWithList")
+  CompletionStage<Response<Void>> createUsersWithListInput(
+    @retrofit2.http.Body List<User> user
+  );
+
+  /**
+   * Delete user
+   * This can only be done by the logged in user.
+   * @param username The name that needs to be deleted (required)
+   * @return Call&lt;Void&gt;
+   */
+  @DELETE("user/{username}")
+  CompletionStage<Response<Void>> deleteUser(
+    @retrofit2.http.Path("username") String username
+  );
+
+  /**
+   * Get user by user name
+   * 
+   * @param username The name that needs to be fetched. Use user1 for testing. (required)
+   * @return Call&lt;User&gt;
+   */
+  @GET("user/{username}")
+  CompletionStage<Response<User>> getUserByName(
+    @retrofit2.http.Path("username") String username
+  );
+
+  /**
+   * Logs user into the system
+   * 
+   * @param username The user name for login (required)
+   * @param password The password for login in clear text (required)
+   * @return Call&lt;String&gt;
+   */
+  @GET("user/login")
+  CompletionStage<Response<String>> loginUser(
+    @retrofit2.http.Query("username") String username, @retrofit2.http.Query("password") String password
+  );
+
+  /**
+   * Logs out current logged in user session
+   * 
+   * @return Call&lt;Void&gt;
+   */
+  @GET("user/logout")
+  CompletionStage<Response<Void>> logoutUser();
+    
+
+  /**
+   * Updated user
+   * This can only be done by the logged in user.
+   * @param username name that need to be deleted (required)
+   * @param user Updated user object (required)
+   * @return Call&lt;Void&gt;
+   */
+  @PUT("user/{username}")
+  CompletionStage<Response<Void>> updateUser(
+    @retrofit2.http.Path("username") String username, @retrofit2.http.Body User user
+  );
+
+}

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/auth/ApiKeyAuth.java

@@ -0,0 +1,78 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.auth;
+
+import org.openapitools.client.Pair;
+
+import java.util.Map;
+import java.util.List;
+
+/**
+ * Holds ApiKey auth info
+ */
+
+public class ApiKeyAuth implements Authentication {
+  private final String location;
+  private final String paramName;
+
+  private String apiKey;
+  private String apiKeyPrefix;
+
+  public ApiKeyAuth(String location, String paramName) {
+    this.location = location;
+    this.paramName = paramName;
+  }
+
+  public String getLocation() {
+    return location;
+  }
+
+  public String getParamName() {
+    return paramName;
+  }
+
+  public String getApiKey() {
+    return apiKey;
+  }
+
+  public void setApiKey(String apiKey) {
+    this.apiKey = apiKey;
+  }
+
+  public String getApiKeyPrefix() {
+    return apiKeyPrefix;
+  }
+
+  public void setApiKeyPrefix(String apiKeyPrefix) {
+    this.apiKeyPrefix = apiKeyPrefix;
+  }
+
+  @Override
+  public void applyToParams(List<Pair> queryParams, Map<String, String> headerParams) {
+    if (apiKey == null) {
+      return;
+    }
+    String value;
+    if (apiKeyPrefix != null) {
+      value = apiKeyPrefix + " " + apiKey;
+    } else {
+      value = apiKey;
+    }
+    if ("query".equals(location)) {
+      queryParams.add(new Pair(paramName, value));
+    } else if ("header".equals(location)) {
+      headerParams.put(paramName, value);
+    }
+  }
+}

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/auth/Authentication.java

@@ -0,0 +1,29 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.auth;
+
+import org.openapitools.client.Pair;
+
+import java.util.Map;
+import java.util.List;
+
+public interface Authentication {
+    /**
+     * Apply authentication settings to header and query params.
+     *
+     * @param queryParams List of query parameters
+     * @param headerParams Map of header parameters
+     */
+    void applyToParams(List<Pair> queryParams, Map<String, String> headerParams);
+}

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/model/AdditionalPropertiesClass.java

@@ -0,0 +1,136 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * AdditionalPropertiesClass
+ */
+
+public class AdditionalPropertiesClass {
+  @JsonProperty("map_property")
+  private Map<String, String> mapProperty = null;
+
+  @JsonProperty("map_of_map_property")
+  private Map<String, Map<String, String>> mapOfMapProperty = null;
+
+  public AdditionalPropertiesClass mapProperty(Map<String, String> mapProperty) {
+    this.mapProperty = mapProperty;
+    return this;
+  }
+
+  public AdditionalPropertiesClass putMapPropertyItem(String key, String mapPropertyItem) {
+    if (this.mapProperty == null) {
+      this.mapProperty = new HashMap<>();
+    }
+    this.mapProperty.put(key, mapPropertyItem);
+    return this;
+  }
+
+   /**
+   * Get mapProperty
+   * @return mapProperty
+  **/
+  @ApiModelProperty(value = "")
+  public Map<String, String> getMapProperty() {
+    return mapProperty;
+  }
+
+  public void setMapProperty(Map<String, String> mapProperty) {
+    this.mapProperty = mapProperty;
+  }
+
+  public AdditionalPropertiesClass mapOfMapProperty(Map<String, Map<String, String>> mapOfMapProperty) {
+    this.mapOfMapProperty = mapOfMapProperty;
+    return this;
+  }
+
+  public AdditionalPropertiesClass putMapOfMapPropertyItem(String key, Map<String, String> mapOfMapPropertyItem) {
+    if (this.mapOfMapProperty == null) {
+      this.mapOfMapProperty = new HashMap<>();
+    }
+    this.mapOfMapProperty.put(key, mapOfMapPropertyItem);
+    return this;
+  }
+
+   /**
+   * Get mapOfMapProperty
+   * @return mapOfMapProperty
+  **/
+  @Valid
+  @ApiModelProperty(value = "")
+  public Map<String, Map<String, String>> getMapOfMapProperty() {
+    return mapOfMapProperty;
+  }
+
+  public void setMapOfMapProperty(Map<String, Map<String, String>> mapOfMapProperty) {
+    this.mapOfMapProperty = mapOfMapProperty;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    AdditionalPropertiesClass additionalPropertiesClass = (AdditionalPropertiesClass) o;
+    return Objects.equals(this.mapProperty, additionalPropertiesClass.mapProperty) &&
+        Objects.equals(this.mapOfMapProperty, additionalPropertiesClass.mapOfMapProperty);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(mapProperty, mapOfMapProperty);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class AdditionalPropertiesClass {\n");
+    
+    sb.append("    mapProperty: ").append(toIndentedString(mapProperty)).append("\n");
+    sb.append("    mapOfMapProperty: ").append(toIndentedString(mapOfMapProperty)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/model/Animal.java

@@ -0,0 +1,125 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonSubTypes;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * Animal
+ */
+
+@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = "className", visible = true)
+@JsonSubTypes({
+  @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
+  @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
+})
+
+public class Animal {
+  @JsonProperty("className")
+  private String className = null;
+
+  @JsonProperty("color")
+  private String color = "red";
+
+  public Animal className(String className) {
+    this.className = className;
+    return this;
+  }
+
+   /**
+   * Get className
+   * @return className
+  **/
+  @NotNull
+  @ApiModelProperty(required = true, value = "")
+  public String getClassName() {
+    return className;
+  }
+
+  public void setClassName(String className) {
+    this.className = className;
+  }
+
+  public Animal color(String color) {
+    this.color = color;
+    return this;
+  }
+
+   /**
+   * Get color
+   * @return color
+  **/
+  @ApiModelProperty(value = "")
+  public String getColor() {
+    return color;
+  }
+
+  public void setColor(String color) {
+    this.color = color;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Animal animal = (Animal) o;
+    return Objects.equals(this.className, animal.className) &&
+        Objects.equals(this.color, animal.color);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(className, color);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Animal {\n");
+    
+    sb.append("    className: ").append(toIndentedString(className)).append("\n");
+    sb.append("    color: ").append(toIndentedString(color)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/model/AnimalFarm.java

@@ -0,0 +1,68 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import java.util.ArrayList;
+import java.util.List;
+import org.openapitools.client.model.Animal;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * AnimalFarm
+ */
+
+public class AnimalFarm extends ArrayList<Animal> {
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    return super.equals(o);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(super.hashCode());
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class AnimalFarm {\n");
+    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnly.java

@@ -0,0 +1,105 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * ArrayOfArrayOfNumberOnly
+ */
+
+public class ArrayOfArrayOfNumberOnly {
+  @JsonProperty("ArrayArrayNumber")
+  private List<List<BigDecimal>> arrayArrayNumber = null;
+
+  public ArrayOfArrayOfNumberOnly arrayArrayNumber(List<List<BigDecimal>> arrayArrayNumber) {
+    this.arrayArrayNumber = arrayArrayNumber;
+    return this;
+  }
+
+  public ArrayOfArrayOfNumberOnly addArrayArrayNumberItem(List<BigDecimal> arrayArrayNumberItem) {
+    if (this.arrayArrayNumber == null) {
+      this.arrayArrayNumber = new ArrayList<>();
+    }
+    this.arrayArrayNumber.add(arrayArrayNumberItem);
+    return this;
+  }
+
+   /**
+   * Get arrayArrayNumber
+   * @return arrayArrayNumber
+  **/
+  @Valid
+  @ApiModelProperty(value = "")
+  public List<List<BigDecimal>> getArrayArrayNumber() {
+    return arrayArrayNumber;
+  }
+
+  public void setArrayArrayNumber(List<List<BigDecimal>> arrayArrayNumber) {
+    this.arrayArrayNumber = arrayArrayNumber;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ArrayOfArrayOfNumberOnly arrayOfArrayOfNumberOnly = (ArrayOfArrayOfNumberOnly) o;
+    return Objects.equals(this.arrayArrayNumber, arrayOfArrayOfNumberOnly.arrayArrayNumber);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(arrayArrayNumber);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ArrayOfArrayOfNumberOnly {\n");
+    
+    sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/model/ArrayOfNumberOnly.java

@@ -0,0 +1,105 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * ArrayOfNumberOnly
+ */
+
+public class ArrayOfNumberOnly {
+  @JsonProperty("ArrayNumber")
+  private List<BigDecimal> arrayNumber = null;
+
+  public ArrayOfNumberOnly arrayNumber(List<BigDecimal> arrayNumber) {
+    this.arrayNumber = arrayNumber;
+    return this;
+  }
+
+  public ArrayOfNumberOnly addArrayNumberItem(BigDecimal arrayNumberItem) {
+    if (this.arrayNumber == null) {
+      this.arrayNumber = new ArrayList<>();
+    }
+    this.arrayNumber.add(arrayNumberItem);
+    return this;
+  }
+
+   /**
+   * Get arrayNumber
+   * @return arrayNumber
+  **/
+  @Valid
+  @ApiModelProperty(value = "")
+  public List<BigDecimal> getArrayNumber() {
+    return arrayNumber;
+  }
+
+  public void setArrayNumber(List<BigDecimal> arrayNumber) {
+    this.arrayNumber = arrayNumber;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ArrayOfNumberOnly arrayOfNumberOnly = (ArrayOfNumberOnly) o;
+    return Objects.equals(this.arrayNumber, arrayOfNumberOnly.arrayNumber);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(arrayNumber);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ArrayOfNumberOnly {\n");
+    
+    sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/model/ArrayTest.java

@@ -0,0 +1,168 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.util.ArrayList;
+import java.util.List;
+import org.openapitools.client.model.ReadOnlyFirst;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * ArrayTest
+ */
+
+public class ArrayTest {
+  @JsonProperty("array_of_string")
+  private List<String> arrayOfString = null;
+
+  @JsonProperty("array_array_of_integer")
+  private List<List<Long>> arrayArrayOfInteger = null;
+
+  @JsonProperty("array_array_of_model")
+  private List<List<ReadOnlyFirst>> arrayArrayOfModel = null;
+
+  public ArrayTest arrayOfString(List<String> arrayOfString) {
+    this.arrayOfString = arrayOfString;
+    return this;
+  }
+
+  public ArrayTest addArrayOfStringItem(String arrayOfStringItem) {
+    if (this.arrayOfString == null) {
+      this.arrayOfString = new ArrayList<>();
+    }
+    this.arrayOfString.add(arrayOfStringItem);
+    return this;
+  }
+
+   /**
+   * Get arrayOfString
+   * @return arrayOfString
+  **/
+  @ApiModelProperty(value = "")
+  public List<String> getArrayOfString() {
+    return arrayOfString;
+  }
+
+  public void setArrayOfString(List<String> arrayOfString) {
+    this.arrayOfString = arrayOfString;
+  }
+
+  public ArrayTest arrayArrayOfInteger(List<List<Long>> arrayArrayOfInteger) {
+    this.arrayArrayOfInteger = arrayArrayOfInteger;
+    return this;
+  }
+
+  public ArrayTest addArrayArrayOfIntegerItem(List<Long> arrayArrayOfIntegerItem) {
+    if (this.arrayArrayOfInteger == null) {
+      this.arrayArrayOfInteger = new ArrayList<>();
+    }
+    this.arrayArrayOfInteger.add(arrayArrayOfIntegerItem);
+    return this;
+  }
+
+   /**
+   * Get arrayArrayOfInteger
+   * @return arrayArrayOfInteger
+  **/
+  @Valid
+  @ApiModelProperty(value = "")
+  public List<List<Long>> getArrayArrayOfInteger() {
+    return arrayArrayOfInteger;
+  }
+
+  public void setArrayArrayOfInteger(List<List<Long>> arrayArrayOfInteger) {
+    this.arrayArrayOfInteger = arrayArrayOfInteger;
+  }
+
+  public ArrayTest arrayArrayOfModel(List<List<ReadOnlyFirst>> arrayArrayOfModel) {
+    this.arrayArrayOfModel = arrayArrayOfModel;
+    return this;
+  }
+
+  public ArrayTest addArrayArrayOfModelItem(List<ReadOnlyFirst> arrayArrayOfModelItem) {
+    if (this.arrayArrayOfModel == null) {
+      this.arrayArrayOfModel = new ArrayList<>();
+    }
+    this.arrayArrayOfModel.add(arrayArrayOfModelItem);
+    return this;
+  }
+
+   /**
+   * Get arrayArrayOfModel
+   * @return arrayArrayOfModel
+  **/
+  @Valid
+  @ApiModelProperty(value = "")
+  public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
+    return arrayArrayOfModel;
+  }
+
+  public void setArrayArrayOfModel(List<List<ReadOnlyFirst>> arrayArrayOfModel) {
+    this.arrayArrayOfModel = arrayArrayOfModel;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ArrayTest arrayTest = (ArrayTest) o;
+    return Objects.equals(this.arrayOfString, arrayTest.arrayOfString) &&
+        Objects.equals(this.arrayArrayOfInteger, arrayTest.arrayArrayOfInteger) &&
+        Objects.equals(this.arrayArrayOfModel, arrayTest.arrayArrayOfModel);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(arrayOfString, arrayArrayOfInteger, arrayArrayOfModel);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ArrayTest {\n");
+    
+    sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
+    sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
+    sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/model/Capitalization.java

@@ -0,0 +1,208 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * Capitalization
+ */
+
+public class Capitalization {
+  @JsonProperty("smallCamel")
+  private String smallCamel = null;
+
+  @JsonProperty("CapitalCamel")
+  private String capitalCamel = null;
+
+  @JsonProperty("small_Snake")
+  private String smallSnake = null;
+
+  @JsonProperty("Capital_Snake")
+  private String capitalSnake = null;
+
+  @JsonProperty("SCA_ETH_Flow_Points")
+  private String scAETHFlowPoints = null;
+
+  @JsonProperty("ATT_NAME")
+  private String ATT_NAME = null;
+
+  public Capitalization smallCamel(String smallCamel) {
+    this.smallCamel = smallCamel;
+    return this;
+  }
+
+   /**
+   * Get smallCamel
+   * @return smallCamel
+  **/
+  @ApiModelProperty(value = "")
+  public String getSmallCamel() {
+    return smallCamel;
+  }
+
+  public void setSmallCamel(String smallCamel) {
+    this.smallCamel = smallCamel;
+  }
+
+  public Capitalization capitalCamel(String capitalCamel) {
+    this.capitalCamel = capitalCamel;
+    return this;
+  }
+
+   /**
+   * Get capitalCamel
+   * @return capitalCamel
+  **/
+  @ApiModelProperty(value = "")
+  public String getCapitalCamel() {
+    return capitalCamel;
+  }
+
+  public void setCapitalCamel(String capitalCamel) {
+    this.capitalCamel = capitalCamel;
+  }
+
+  public Capitalization smallSnake(String smallSnake) {
+    this.smallSnake = smallSnake;
+    return this;
+  }
+
+   /**
+   * Get smallSnake
+   * @return smallSnake
+  **/
+  @ApiModelProperty(value = "")
+  public String getSmallSnake() {
+    return smallSnake;
+  }
+
+  public void setSmallSnake(String smallSnake) {
+    this.smallSnake = smallSnake;
+  }
+
+  public Capitalization capitalSnake(String capitalSnake) {
+    this.capitalSnake = capitalSnake;
+    return this;
+  }
+
+   /**
+   * Get capitalSnake
+   * @return capitalSnake
+  **/
+  @ApiModelProperty(value = "")
+  public String getCapitalSnake() {
+    return capitalSnake;
+  }
+
+  public void setCapitalSnake(String capitalSnake) {
+    this.capitalSnake = capitalSnake;
+  }
+
+  public Capitalization scAETHFlowPoints(String scAETHFlowPoints) {
+    this.scAETHFlowPoints = scAETHFlowPoints;
+    return this;
+  }
+
+   /**
+   * Get scAETHFlowPoints
+   * @return scAETHFlowPoints
+  **/
+  @ApiModelProperty(value = "")
+  public String getScAETHFlowPoints() {
+    return scAETHFlowPoints;
+  }
+
+  public void setScAETHFlowPoints(String scAETHFlowPoints) {
+    this.scAETHFlowPoints = scAETHFlowPoints;
+  }
+
+  public Capitalization ATT_NAME(String ATT_NAME) {
+    this.ATT_NAME = ATT_NAME;
+    return this;
+  }
+
+   /**
+   * Name of the pet 
+   * @return ATT_NAME
+  **/
+  @ApiModelProperty(value = "Name of the pet ")
+  public String getATTNAME() {
+    return ATT_NAME;
+  }
+
+  public void setATTNAME(String ATT_NAME) {
+    this.ATT_NAME = ATT_NAME;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Capitalization capitalization = (Capitalization) o;
+    return Objects.equals(this.smallCamel, capitalization.smallCamel) &&
+        Objects.equals(this.capitalCamel, capitalization.capitalCamel) &&
+        Objects.equals(this.smallSnake, capitalization.smallSnake) &&
+        Objects.equals(this.capitalSnake, capitalization.capitalSnake) &&
+        Objects.equals(this.scAETHFlowPoints, capitalization.scAETHFlowPoints) &&
+        Objects.equals(this.ATT_NAME, capitalization.ATT_NAME);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(smallCamel, capitalCamel, smallSnake, capitalSnake, scAETHFlowPoints, ATT_NAME);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Capitalization {\n");
+    
+    sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
+    sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
+    sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
+    sb.append("    capitalSnake: ").append(toIndentedString(capitalSnake)).append("\n");
+    sb.append("    scAETHFlowPoints: ").append(toIndentedString(scAETHFlowPoints)).append("\n");
+    sb.append("    ATT_NAME: ").append(toIndentedString(ATT_NAME)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/model/Cat.java

@@ -0,0 +1,95 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.client.model.Animal;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * Cat
+ */
+
+public class Cat extends Animal {
+  @JsonProperty("declawed")
+  private Boolean declawed = null;
+
+  public Cat declawed(Boolean declawed) {
+    this.declawed = declawed;
+    return this;
+  }
+
+   /**
+   * Get declawed
+   * @return declawed
+  **/
+  @ApiModelProperty(value = "")
+  public Boolean getDeclawed() {
+    return declawed;
+  }
+
+  public void setDeclawed(Boolean declawed) {
+    this.declawed = declawed;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Cat cat = (Cat) o;
+    return Objects.equals(this.declawed, cat.declawed) &&
+        super.equals(o);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(declawed, super.hashCode());
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Cat {\n");
+    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+    sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/model/Category.java

@@ -0,0 +1,116 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * Category
+ */
+
+public class Category {
+  @JsonProperty("id")
+  private Long id = null;
+
+  @JsonProperty("name")
+  private String name = null;
+
+  public Category id(Long id) {
+    this.id = id;
+    return this;
+  }
+
+   /**
+   * Get id
+   * @return id
+  **/
+  @ApiModelProperty(value = "")
+  public Long getId() {
+    return id;
+  }
+
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+  public Category name(String name) {
+    this.name = name;
+    return this;
+  }
+
+   /**
+   * Get name
+   * @return name
+  **/
+  @ApiModelProperty(value = "")
+  public String getName() {
+    return name;
+  }
+
+  public void setName(String name) {
+    this.name = name;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Category category = (Category) o;
+    return Objects.equals(this.id, category.id) &&
+        Objects.equals(this.name, category.name);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, name);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Category {\n");
+    
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+