[Java-client] Add Spring 5 WebClient as new library (#435)

samples/client/petstore/java/webclient/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/webclient/src/main/java/org/openapitools/client/ApiClient.java

@@ -0,0 +1,641 @@
+package org.openapitools.client;
+
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.springframework.core.ParameterizedTypeReference;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpRequest;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.InvalidMediaTypeException;
+import org.springframework.http.MediaType;
+import org.springframework.http.RequestEntity;
+import org.springframework.http.RequestEntity.BodyBuilder;
+import org.springframework.http.ResponseEntity;
+import org.springframework.http.client.BufferingClientHttpRequestFactory;
+import org.springframework.http.client.ClientHttpRequestExecution;
+import org.springframework.http.client.ClientHttpRequestInterceptor;
+import org.springframework.http.client.ClientHttpResponse;
+import org.springframework.http.codec.json.Jackson2JsonDecoder;
+import org.springframework.http.codec.json.Jackson2JsonEncoder;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+import org.springframework.util.StringUtils;
+import org.springframework.http.client.reactive.ClientHttpRequest;
+import org.springframework.web.client.RestClientException;
+import org.springframework.web.util.UriComponentsBuilder;
+import org.springframework.web.reactive.function.client.WebClient;
+import org.springframework.web.reactive.function.client.ClientResponse;
+import org.springframework.web.reactive.function.BodyInserter;
+import org.springframework.web.reactive.function.BodyInserters;
+import org.springframework.web.reactive.function.client.ExchangeStrategies;
+import reactor.core.publisher.Mono;
+import reactor.core.publisher.Flux;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.UnsupportedEncodingException;
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
+import java.text.DateFormat;
+import java.text.ParseException;
+import java.util.Arrays;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.TimeZone;
+
+import org.openapitools.client.auth.Authentication;
+import org.openapitools.client.auth.HttpBasicAuth;
+import org.openapitools.client.auth.ApiKeyAuth;
+import org.openapitools.client.auth.OAuth;
+
+
+public class ApiClient {
+    public enum CollectionFormat {
+        CSV(","), TSV("\t"), SSV(" "), PIPES("|"), MULTI(null);
+
+        private final String separator;
+        private CollectionFormat(String separator) {
+            this.separator = separator;
+        }
+
+        private String collectionToString(Collection<? extends CharSequence> collection) {
+            return StringUtils.collectionToDelimitedString(collection, separator);
+        }
+    }
+
+    private HttpHeaders defaultHeaders = new HttpHeaders();
+    
+    private String basePath = "http://petstore.swagger.io:80/v2";
+
+    private final WebClient webClient;
+    private final DateFormat dateFormat;
+
+    private Map<String, Authentication> authentications;
+
+
+    public ApiClient() {
+        this.dateFormat = createDefaultDateFormat();
+        this.webClient = buildWebClient(new ObjectMapper(), this.dateFormat);
+    }
+
+    public ApiClient(ObjectMapper mapper, DateFormat format) {
+        this(buildWebClient(mapper.copy(), format), format);
+    }
+
+    private ApiClient(WebClient webClient, DateFormat format) {
+        this.webClient = webClient;
+        this.dateFormat = format;
+    }
+
+    public DateFormat createDefaultDateFormat() {
+        DateFormat dateFormat = new RFC3339DateFormat();
+        dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
+        return dateFormat;
+    }
+    
+    protected void init() {
+        // Setup authentications (key: authentication name, value: authentication).
+        authentications = new HashMap<String, Authentication>();
+        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);
+    }
+
+    /**
+    * Build the RestTemplate used to make HTTP requests.
+    * @return RestTemplate
+    */
+    public static WebClient buildWebClient(ObjectMapper mapper, DateFormat dateFormat) {
+        mapper.setDateFormat(dateFormat);
+        mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+        ExchangeStrategies strategies = ExchangeStrategies
+            .builder()
+            .codecs(clientDefaultCodecsConfigurer -> {
+                clientDefaultCodecsConfigurer.defaultCodecs().jackson2JsonEncoder(new Jackson2JsonEncoder(mapper, MediaType.APPLICATION_JSON));
+                clientDefaultCodecsConfigurer.defaultCodecs().jackson2JsonDecoder(new Jackson2JsonDecoder(mapper, MediaType.APPLICATION_JSON));
+            }).build();
+        WebClient.Builder webClient = WebClient.builder().exchangeStrategies(strategies);
+        return webClient.build();
+    }
+
+    
+    /**
+     * Get the current base path
+     * @return String the base path
+     */
+    public String getBasePath() {
+        return basePath;
+    }
+
+    /**
+     * Set the base path, which should include the host
+     * @param basePath the base path
+     * @return ApiClient this client
+     */
+    public ApiClient setBasePath(String basePath) {
+        this.basePath = basePath;
+        return this;
+    }
+
+    /**
+     * Get authentications (key: authentication name, value: authentication).
+     * @return Map the currently configured authentication types
+     */
+    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 username for the first HTTP basic authentication.
+     * @param username the username
+     */
+    public void setUsername(String username) {
+        for (Authentication auth : authentications.values()) {
+            if (auth instanceof HttpBasicAuth) {
+                ((HttpBasicAuth) auth).setUsername(username);
+                return;
+            }
+        }
+        throw new RuntimeException("No HTTP basic authentication configured!");
+    }
+
+    /**
+     * Helper method to set password for the first HTTP basic authentication.
+     * @param password the password
+     */
+    public void setPassword(String password) {
+        for (Authentication auth : authentications.values()) {
+            if (auth instanceof HttpBasicAuth) {
+                ((HttpBasicAuth) auth).setPassword(password);
+                return;
+            }
+        }
+        throw new RuntimeException("No HTTP basic authentication configured!");
+    }
+
+    /**
+     * Helper method to set API key value for the first API key authentication.
+     * @param apiKey the API key
+     */
+    public void setApiKey(String apiKey) {
+        for (Authentication auth : authentications.values()) {
+            if (auth instanceof ApiKeyAuth) {
+                ((ApiKeyAuth) auth).setApiKey(apiKey);
+                return;
+            }
+        }
+        throw new RuntimeException("No API key authentication configured!");
+    }
+
+    /**
+     * Helper method to set API key prefix for the first API key authentication.
+     * @param apiKeyPrefix the API key prefix
+     */
+    public void setApiKeyPrefix(String apiKeyPrefix) {
+        for (Authentication auth : authentications.values()) {
+            if (auth instanceof ApiKeyAuth) {
+                ((ApiKeyAuth) auth).setApiKeyPrefix(apiKeyPrefix);
+                return;
+            }
+        }
+        throw new RuntimeException("No API key authentication configured!");
+    }
+
+    /**
+     * Helper method to set access token for the first OAuth2 authentication.
+     * @param accessToken the access token
+     */
+    public void setAccessToken(String accessToken) {
+        for (Authentication auth : authentications.values()) {
+            if (auth instanceof OAuth) {
+                ((OAuth) auth).setAccessToken(accessToken);
+                return;
+            }
+        }
+        throw new RuntimeException("No OAuth2 authentication configured!");
+    }
+
+    /**
+     * Set the User-Agent header's value (by adding to the default header map).
+     * @param userAgent the user agent string
+     * @return ApiClient this client
+     */
+    public ApiClient setUserAgent(String userAgent) {
+        addDefaultHeader("User-Agent", userAgent);
+        return this;
+    }
+
+    /**
+     * Add a default header.
+     *
+     * @param name The header's name
+     * @param value The header's value
+     * @return ApiClient this client
+     */
+    public ApiClient addDefaultHeader(String name, String value) {
+        if (defaultHeaders.containsKey(name)) {
+            defaultHeaders.remove(name);
+        }
+        defaultHeaders.add(name, value);
+        return this;
+    }
+
+    /**
+     * Get the date format used to parse/format date parameters.
+     * @return DateFormat format
+     */
+    public DateFormat getDateFormat() {
+        return dateFormat;
+    }
+
+    /**
+     * Parse the given string into Date object.
+     */
+    public Date parseDate(String str) {
+        try {
+            return dateFormat.parse(str);
+        } catch (ParseException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    /**
+     * Format the given Date object into string.
+     */
+    public String formatDate(Date date) {
+        return dateFormat.format(date);
+    }
+
+    /**
+     * Format the given parameter object into string.
+     * @param param the object to convert
+     * @return String the parameter represented as a String
+     */
+    public String parameterToString(Object param) {
+        if (param == null) {
+            return "";
+        } else if (param instanceof Date) {
+            return formatDate( (Date) param);
+        } else if (param instanceof Collection) {
+            StringBuilder b = new StringBuilder();
+            for(Object o : (Collection<?>) param) {
+                if(b.length() > 0) {
+                    b.append(",");
+                }
+                b.append(String.valueOf(o));
+            }
+            return b.toString();
+        } else {
+            return String.valueOf(param);
+        }
+    }
+
+    /**
+     * Converts a parameter to a {@link MultiValueMap} for use in REST requests
+     * @param collectionFormat The format to convert to
+     * @param name The name of the parameter
+     * @param value The parameter's value
+     * @return a Map containing the String value(s) of the input parameter
+     */
+    public MultiValueMap<String, String> parameterToMultiValueMap(CollectionFormat collectionFormat, String name, Object value) {
+        final MultiValueMap<String, String> params = new LinkedMultiValueMap<String, String>();
+
+        if (name == null || name.isEmpty() || value == null) {
+            return params;
+        }
+
+        if(collectionFormat == null) {
+            collectionFormat = CollectionFormat.CSV;
+        }
+
+        Collection<?> valueCollection = null;
+        if (value instanceof Collection) {
+            valueCollection = (Collection<?>) value;
+        } else {
+            params.add(name, parameterToString(value));
+            return params;
+        }
+
+        if (valueCollection.isEmpty()){
+            return params;
+        }
+
+        if (collectionFormat.equals(CollectionFormat.MULTI)) {
+            for (Object item : valueCollection) {
+                params.add(name, parameterToString(item));
+            }
+            return params;
+        }
+
+        List<String> values = new ArrayList<String>();
+        for(Object o : valueCollection) {
+            values.add(parameterToString(o));
+        }
+        params.add(name, collectionFormat.collectionToString(values));
+
+        return params;
+    }
+
+    /**
+    * Check if the given {@code String} is a JSON MIME.
+    * @param mediaType the input MediaType
+    * @return boolean true if the MediaType represents JSON, false otherwise
+    */
+    public boolean isJsonMime(String mediaType) {
+        // "* / *" is default to JSON
+        if ("*/*".equals(mediaType)) {
+            return true;
+        }
+
+        try {
+            return isJsonMime(MediaType.parseMediaType(mediaType));
+        } catch (InvalidMediaTypeException e) {
+        }
+        return false;
+    }
+
+    /**
+     * Check if the given MIME is a JSON MIME.
+     * JSON MIME examples:
+     *     application/json
+     *     application/json; charset=UTF8
+     *     APPLICATION/JSON
+     * @param mediaType the input MediaType
+     * @return boolean true if the MediaType represents JSON, false otherwise
+     */
+    public boolean isJsonMime(MediaType mediaType) {
+        return mediaType != null && (MediaType.APPLICATION_JSON.isCompatibleWith(mediaType) || mediaType.getSubtype().matches("^.*\\+json[;]?\\s*$"));
+    }
+
+    /**
+     * Select the Accept header's value from the given accepts array:
+     *     if JSON exists in the given array, use it;
+     *     otherwise use all of them (joining into a string)
+     *
+     * @param accepts The accepts array to select from
+     * @return List The list of MediaTypes to use for the Accept header
+     */
+    public List<MediaType> selectHeaderAccept(String[] accepts) {
+        if (accepts.length == 0) {
+            return null;
+        }
+        for (String accept : accepts) {
+            MediaType mediaType = MediaType.parseMediaType(accept);
+            if (isJsonMime(mediaType)) {
+                return Collections.singletonList(mediaType);
+            }
+        }
+        return MediaType.parseMediaTypes(StringUtils.arrayToCommaDelimitedString(accepts));
+    }
+
+    /**
+     * Select the Content-Type header's value from the given array:
+     *     if JSON exists in the given array, use it;
+     *     otherwise use the first one of the array.
+     *
+     * @param contentTypes The Content-Type array to select from
+     * @return MediaType The Content-Type header to use. If the given array is empty, JSON will be used.
+     */
+    public MediaType selectHeaderContentType(String[] contentTypes) {
+        if (contentTypes.length == 0) {
+            return MediaType.APPLICATION_JSON;
+        }
+        for (String contentType : contentTypes) {
+            MediaType mediaType = MediaType.parseMediaType(contentType);
+            if (isJsonMime(mediaType)) {
+                return mediaType;
+            }
+        }
+        return MediaType.parseMediaType(contentTypes[0]);
+    }
+
+    /**
+     * Select the body to use for the request
+     * @param obj the body object
+     * @param formParams the form parameters
+     * @param contentType the content type of the request
+     * @return Object the selected body
+     */
+    protected BodyInserter<?, ? super ClientHttpRequest> selectBody(Object obj, MultiValueMap<String, Object> formParams, MediaType contentType) {
+        boolean isForm = MediaType.MULTIPART_FORM_DATA.isCompatibleWith(contentType) || MediaType.APPLICATION_FORM_URLENCODED.isCompatibleWith(contentType);
+        return isForm ? BodyInserters.fromMultipartData(formParams) : (obj != null ? BodyInserters.fromObject(obj) : null);
+    }
+
+    /**
+     * Invoke API by sending HTTP request with the given options.
+     *
+     * @param <T> the return type to use
+     * @param path The sub-path of the HTTP URL
+     * @param method The request method
+     * @param queryParams The query parameters
+     * @param body The request body object
+     * @param headerParams The header parameters
+     * @param formParams The form parameters
+     * @param accept The request's Accept header
+     * @param contentType The request's Content-Type header
+     * @param authNames The authentications to apply
+     * @param returnType The return type into which to deserialize the response
+     * @return The response body in chosen type
+     */
+    public <T> Mono<T> invokeAPI(String path, HttpMethod method, MultiValueMap<String, String> queryParams, Object body, HttpHeaders headerParams, MultiValueMap<String, Object> formParams, List<MediaType> accept, MediaType contentType, String[] authNames, ParameterizedTypeReference<T> returnType) throws RestClientException {
+        final WebClient.RequestBodySpec requestBuilder = prepareRequest(path, method, queryParams, body, headerParams, formParams, accept, contentType, authNames);
+
+        return requestBuilder.exchange()
+            .flatMap(response -> {
+                HttpStatus statusCode = response.statusCode();
+                if (response.statusCode() == HttpStatus.NO_CONTENT) {
+                    return Mono.empty();
+                } else if (statusCode.is2xxSuccessful()) {
+                    if (returnType == null) {
+                        return Mono.empty();
+                    } else {
+                        return response.bodyToMono(returnType);
+                    }
+                } else {
+                    return Mono.error(new RestClientException("API returned " + statusCode + " and it wasn't handled by the RestTemplate error handler"));
+                }
+        });
+    }
+
+    /**
+     * Invoke API by sending HTTP request with the given options.
+     *
+     * @param <T> the return type to use
+     * @param path The sub-path of the HTTP URL
+     * @param method The request method
+     * @param queryParams The query parameters
+     * @param body The request body object
+     * @param headerParams The header parameters
+     * @param formParams The form parameters
+     * @param accept The request's Accept header
+     * @param contentType The request's Content-Type header
+     * @param authNames The authentications to apply
+     * @param returnType The return type into which to deserialize the response
+     * @return The response body in chosen type
+     */
+    public <T> Flux<T> invokeFluxAPI(String path, HttpMethod method, MultiValueMap<String, String> queryParams, Object body, HttpHeaders headerParams, MultiValueMap<String, Object> formParams, List<MediaType> accept, MediaType contentType, String[] authNames, ParameterizedTypeReference<T> returnType) throws RestClientException {
+        final WebClient.RequestBodySpec requestBuilder = prepareRequest(path, method, queryParams, body, headerParams, formParams, accept, contentType, authNames);
+
+        return requestBuilder.exchange()
+            .flatMapMany(response -> {
+                HttpStatus statusCode = response.statusCode();
+                ClientResponse.Headers headers = response.headers();
+                if (response.statusCode() == HttpStatus.NO_CONTENT) {
+                    return Flux.empty();
+                } else if (statusCode.is2xxSuccessful()) {
+                    if (returnType == null) {
+                        return Flux.empty();
+                    } else {
+                        return response.bodyToFlux(returnType);
+                    }
+                } else {
+                    return Flux.error(new RestClientException("API returned " + statusCode + " and it wasn't handled by the RestTemplate error handler"));
+                }
+            });
+    }
+
+    private WebClient.RequestBodySpec prepareRequest(String path, HttpMethod method, MultiValueMap<String, String> queryParams, Object body, HttpHeaders headerParams, MultiValueMap<String, Object> formParams, List<MediaType> accept, MediaType contentType, String[] authNames) {
+        updateParamsForAuth(authNames, queryParams, headerParams);
+
+        final UriComponentsBuilder builder = UriComponentsBuilder.fromHttpUrl(basePath).path(path);
+        if (queryParams != null) {
+            //encode the query parameters in case they contain unsafe characters
+            for (List<String> values : queryParams.values()) {
+                if (values != null) {
+                    for (int i = 0; i < values.size(); i++) {
+                        try {
+                            values.set(i, URLEncoder.encode(values.get(i), "utf8"));
+                        } catch (UnsupportedEncodingException e) {
+
+                        }
+                    }
+                }
+            }
+            builder.queryParams(queryParams);
+        }
+
+        final WebClient.RequestBodySpec requestBuilder = webClient.method(method).uri(builder.build().toUri());
+        if(accept != null) {
+            requestBuilder.accept(accept.toArray(new MediaType[accept.size()]));
+        }
+        if(contentType != null) {
+            requestBuilder.contentType(contentType);
+        }
+
+        addHeadersToRequest(headerParams, requestBuilder);
+        addHeadersToRequest(defaultHeaders, requestBuilder);
+
+        requestBuilder.body(selectBody(body, formParams, contentType));
+        return requestBuilder;
+    }
+
+    /**
+     * Add headers to the request that is being built
+     * @param headers The headers to add
+     * @param requestBuilder The current request
+     */
+    protected void addHeadersToRequest(HttpHeaders headers, WebClient.RequestBodySpec requestBuilder) {
+        for (Entry<String, List<String>> entry : headers.entrySet()) {
+            List<String> values = entry.getValue();
+            for(String value : values) {
+                if (value != null) {
+                    requestBuilder.header(entry.getKey(), value);
+                }
+            }
+        }
+    }
+
+    /**
+     * Update query and header parameters based on authentication settings.
+     *
+     * @param authNames The authentications to apply
+     * @param queryParams The query parameters
+     * @param headerParams The header parameters
+     */
+    private void updateParamsForAuth(String[] authNames, MultiValueMap<String, String> queryParams, HttpHeaders headerParams) {
+        for (String authName : authNames) {
+            Authentication auth = authentications.get(authName);
+            if (auth == null) {
+                throw new RestClientException("Authentication undefined: " + authName);
+            }
+            auth.applyToParams(queryParams, headerParams);
+        }
+    }
+    
+    private class ApiClientHttpRequestInterceptor implements ClientHttpRequestInterceptor {
+        private final Log log = LogFactory.getLog(ApiClientHttpRequestInterceptor.class);
+
+        @Override
+        public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution) throws IOException {
+            logRequest(request, body);
+            ClientHttpResponse response = execution.execute(request, body);
+            logResponse(response);
+            return response;
+        }
+
+        private void logRequest(HttpRequest request, byte[] body) throws UnsupportedEncodingException {
+            log.info("URI: " + request.getURI());
+            log.info("HTTP Method: " + request.getMethod());
+            log.info("HTTP Headers: " + headersToString(request.getHeaders()));
+            log.info("Request Body: " + new String(body, StandardCharsets.UTF_8));
+        }
+
+        private void logResponse(ClientHttpResponse response) throws IOException {
+            log.info("HTTP Status Code: " + response.getRawStatusCode());
+            log.info("Status Text: " + response.getStatusText());
+            log.info("HTTP Headers: " + headersToString(response.getHeaders()));
+            log.info("Response Body: " + bodyToString(response.getBody()));
+        }
+
+        private String headersToString(HttpHeaders headers) {
+            StringBuilder builder = new StringBuilder();
+            for(Entry<String, List<String>> entry : headers.entrySet()) {
+                builder.append(entry.getKey()).append("=[");
+                for(String value : entry.getValue()) {
+                    builder.append(value).append(",");
+                }
+                builder.setLength(builder.length() - 1); // Get rid of trailing comma
+                builder.append("],");
+            }
+            builder.setLength(builder.length() - 1); // Get rid of trailing comma
+            return builder.toString();
+        }
+        
+        private String bodyToString(InputStream body) throws IOException {
+            StringBuilder builder = new StringBuilder();
+            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(body, StandardCharsets.UTF_8));
+            String line = bufferedReader.readLine();
+            while (line != null) {
+                builder.append(line).append(System.lineSeparator());
+                line = bufferedReader.readLine();
+            }
+            bufferedReader.close();
+            return builder.toString();
+        }
+    }
+}

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/ApiException.java

@@ -0,0 +1,91 @@
+/*
+ * 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 java.util.Map;
+import java.util.List;
+
+
+public class ApiException extends Exception {
+    private int code = 0;
+    private Map<String, List<String>> responseHeaders = null;
+    private String responseBody = null;
+
+    public ApiException() {}
+
+    public ApiException(Throwable throwable) {
+        super(throwable);
+    }
+
+    public ApiException(String message) {
+        super(message);
+    }
+
+    public ApiException(String message, Throwable throwable, int code, Map<String, List<String>> responseHeaders, String responseBody) {
+        super(message, throwable);
+        this.code = code;
+        this.responseHeaders = responseHeaders;
+        this.responseBody = responseBody;
+    }
+
+    public ApiException(String message, int code, Map<String, List<String>> responseHeaders, String responseBody) {
+        this(message, (Throwable) null, code, responseHeaders, responseBody);
+    }
+
+    public ApiException(String message, Throwable throwable, int code, Map<String, List<String>> responseHeaders) {
+        this(message, throwable, code, responseHeaders, null);
+    }
+
+    public ApiException(int code, Map<String, List<String>> responseHeaders, String responseBody) {
+        this((String) null, (Throwable) null, code, responseHeaders, responseBody);
+    }
+
+    public ApiException(int code, String message) {
+        super(message);
+        this.code = code;
+    }
+
+    public ApiException(int code, String message, Map<String, List<String>> responseHeaders, String responseBody) {
+        this(code, message);
+        this.responseHeaders = responseHeaders;
+        this.responseBody = responseBody;
+    }
+
+    /**
+     * Get the HTTP status code.
+     *
+     * @return HTTP status code
+     */
+    public int getCode() {
+        return code;
+    }
+
+    /**
+     * Get the HTTP response headers.
+     *
+     * @return A map of list of string
+     */
+    public Map<String, List<String>> getResponseHeaders() {
+        return responseHeaders;
+    }
+
+    /**
+     * Get the HTTP response body.
+     *
+     * @return Response body in the form of string
+     */
+    public String getResponseBody() {
+        return responseBody;
+    }
+}

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/Configuration.java

@@ -0,0 +1,39 @@
+/*
+ * 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 Configuration {
+    private static ApiClient defaultApiClient = new ApiClient();
+
+    /**
+     * Get the default API client, which would be used when creating API
+     * instances without providing an API client.
+     *
+     * @return Default API client
+     */
+    public static ApiClient getDefaultApiClient() {
+        return defaultApiClient;
+    }
+
+    /**
+     * Set the default API client, which would be used when creating API
+     * instances without providing an API client.
+     *
+     * @param apiClient API client
+     */
+    public static void setDefaultApiClient(ApiClient apiClient) {
+        defaultApiClient = apiClient;
+    }
+}

samples/client/petstore/java/webclient/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/webclient/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/webclient/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/webclient/src/main/java/org/openapitools/client/api/AnotherFakeApi.java

@@ -0,0 +1,84 @@
+package org.openapitools.client.api;
+
+import org.openapitools.client.ApiClient;
+
+import org.openapitools.client.model.Client;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.client.RestClientException;
+import org.springframework.web.client.HttpClientErrorException;
+import org.springframework.web.util.UriComponentsBuilder;
+import org.springframework.core.ParameterizedTypeReference;
+import org.springframework.core.io.FileSystemResource;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import reactor.core.publisher.Mono;
+import reactor.core.publisher.Flux;
+
+
+public class AnotherFakeApi {
+    private ApiClient apiClient;
+
+    public AnotherFakeApi() {
+        this(new ApiClient());
+    }
+
+    @Autowired
+    public AnotherFakeApi(ApiClient apiClient) {
+        this.apiClient = apiClient;
+    }
+
+    public ApiClient getApiClient() {
+        return apiClient;
+    }
+
+    public void setApiClient(ApiClient apiClient) {
+        this.apiClient = apiClient;
+    }
+
+    /**
+     * To test special tags
+     * To test special tags
+     * <p><b>200</b> - successful operation
+     * @param client client model
+     * @return Client
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Client> testSpecialTags(Client client) throws RestClientException {
+        Object postBody = client;
+        
+        // verify the required parameter 'client' is set
+        if (client == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'client' when calling testSpecialTags");
+        }
+        
+        String path = UriComponentsBuilder.fromPath("/another-fake/dummy").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { 
+            "application/json"
+        };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { 
+            "application/json"
+        };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<Client> returnType = new ParameterizedTypeReference<Client>() {};
+        return apiClient.invokeAPI(path, HttpMethod.PATCH, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+}

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/FakeApi.java

@@ -0,0 +1,466 @@
+package org.openapitools.client.api;
+
+import org.openapitools.client.ApiClient;
+
+import java.math.BigDecimal;
+import org.openapitools.client.model.Client;
+import java.io.File;
+import java.time.LocalDate;
+import java.time.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 org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.client.RestClientException;
+import org.springframework.web.client.HttpClientErrorException;
+import org.springframework.web.util.UriComponentsBuilder;
+import org.springframework.core.ParameterizedTypeReference;
+import org.springframework.core.io.FileSystemResource;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import reactor.core.publisher.Mono;
+import reactor.core.publisher.Flux;
+
+
+public class FakeApi {
+    private ApiClient apiClient;
+
+    public FakeApi() {
+        this(new ApiClient());
+    }
+
+    @Autowired
+    public FakeApi(ApiClient apiClient) {
+        this.apiClient = apiClient;
+    }
+
+    public ApiClient getApiClient() {
+        return apiClient;
+    }
+
+    public void setApiClient(ApiClient apiClient) {
+        this.apiClient = apiClient;
+    }
+
+    /**
+     * 
+     * Test serialization of outer boolean types
+     * <p><b>200</b> - Output boolean
+     * @param body Input boolean as post body
+     * @return Boolean
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Boolean> fakeOuterBooleanSerialize(Boolean body) throws RestClientException {
+        Object postBody = body;
+        
+        String path = UriComponentsBuilder.fromPath("/fake/outer/boolean").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { 
+            "*/*"
+        };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<Boolean> returnType = new ParameterizedTypeReference<Boolean>() {};
+        return apiClient.invokeAPI(path, HttpMethod.POST, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * 
+     * Test serialization of object with outer number type
+     * <p><b>200</b> - Output composite
+     * @param outerComposite Input composite as post body
+     * @return OuterComposite
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<OuterComposite> fakeOuterCompositeSerialize(OuterComposite outerComposite) throws RestClientException {
+        Object postBody = outerComposite;
+        
+        String path = UriComponentsBuilder.fromPath("/fake/outer/composite").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { 
+            "*/*"
+        };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<OuterComposite> returnType = new ParameterizedTypeReference<OuterComposite>() {};
+        return apiClient.invokeAPI(path, HttpMethod.POST, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * 
+     * Test serialization of outer number types
+     * <p><b>200</b> - Output number
+     * @param body Input number as post body
+     * @return BigDecimal
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<BigDecimal> fakeOuterNumberSerialize(BigDecimal body) throws RestClientException {
+        Object postBody = body;
+        
+        String path = UriComponentsBuilder.fromPath("/fake/outer/number").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { 
+            "*/*"
+        };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<BigDecimal> returnType = new ParameterizedTypeReference<BigDecimal>() {};
+        return apiClient.invokeAPI(path, HttpMethod.POST, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * 
+     * Test serialization of outer string types
+     * <p><b>200</b> - Output string
+     * @param body Input string as post body
+     * @return String
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<String> fakeOuterStringSerialize(String body) throws RestClientException {
+        Object postBody = body;
+        
+        String path = UriComponentsBuilder.fromPath("/fake/outer/string").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { 
+            "*/*"
+        };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<String> returnType = new ParameterizedTypeReference<String>() {};
+        return apiClient.invokeAPI(path, HttpMethod.POST, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * 
+     * 
+     * <p><b>200</b> - Success
+     * @param query The query parameter
+     * @param user The user parameter
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Void> testBodyWithQueryParams(String query, User user) throws RestClientException {
+        Object postBody = user;
+        
+        // verify the required parameter 'query' is set
+        if (query == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'query' when calling testBodyWithQueryParams");
+        }
+        
+        // verify the required parameter 'user' is set
+        if (user == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'user' when calling testBodyWithQueryParams");
+        }
+        
+        String path = UriComponentsBuilder.fromPath("/fake/body-with-query-params").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+        
+        queryParams.putAll(apiClient.parameterToMultiValueMap(null, "query", query));
+
+        final String[] accepts = { };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { 
+            "application/json"
+        };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<Void> returnType = new ParameterizedTypeReference<Void>() {};
+        return apiClient.invokeAPI(path, HttpMethod.PUT, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * To test \&quot;client\&quot; model
+     * To test \&quot;client\&quot; model
+     * <p><b>200</b> - successful operation
+     * @param client client model
+     * @return Client
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Client> testClientModel(Client client) throws RestClientException {
+        Object postBody = client;
+        
+        // verify the required parameter 'client' is set
+        if (client == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'client' when calling testClientModel");
+        }
+        
+        String path = UriComponentsBuilder.fromPath("/fake").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { 
+            "application/json"
+        };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { 
+            "application/json"
+        };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<Client> returnType = new ParameterizedTypeReference<Client>() {};
+        return apiClient.invokeAPI(path, HttpMethod.PATCH, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * 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 
+     * <p><b>400</b> - Invalid username supplied
+     * <p><b>404</b> - User not found
+     * @param number None
+     * @param _double None
+     * @param patternWithoutDelimiter None
+     * @param _byte None
+     * @param integer None
+     * @param int32 None
+     * @param int64 None
+     * @param _float None
+     * @param string None
+     * @param binary None
+     * @param date None
+     * @param dateTime None
+     * @param password None
+     * @param paramCallback None
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Void> testEndpointParameters(BigDecimal number, Double _double, String patternWithoutDelimiter, byte[] _byte, Integer integer, Integer int32, Long int64, Float _float, String string, File binary, LocalDate date, OffsetDateTime dateTime, String password, String paramCallback) throws RestClientException {
+        Object postBody = null;
+        
+        // verify the required parameter 'number' is set
+        if (number == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'number' when calling testEndpointParameters");
+        }
+        
+        // verify the required parameter '_double' is set
+        if (_double == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter '_double' when calling testEndpointParameters");
+        }
+        
+        // verify the required parameter 'patternWithoutDelimiter' is set
+        if (patternWithoutDelimiter == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'patternWithoutDelimiter' when calling testEndpointParameters");
+        }
+        
+        // verify the required parameter '_byte' is set
+        if (_byte == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter '_byte' when calling testEndpointParameters");
+        }
+        
+        String path = UriComponentsBuilder.fromPath("/fake").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+        
+        if (integer != null)
+            formParams.add("integer", integer);
+        if (int32 != null)
+            formParams.add("int32", int32);
+        if (int64 != null)
+            formParams.add("int64", int64);
+        if (number != null)
+            formParams.add("number", number);
+        if (_float != null)
+            formParams.add("float", _float);
+        if (_double != null)
+            formParams.add("double", _double);
+        if (string != null)
+            formParams.add("string", string);
+        if (patternWithoutDelimiter != null)
+            formParams.add("pattern_without_delimiter", patternWithoutDelimiter);
+        if (_byte != null)
+            formParams.add("byte", _byte);
+        if (binary != null)
+            formParams.add("binary", new FileSystemResource(binary));
+        if (date != null)
+            formParams.add("date", date);
+        if (dateTime != null)
+            formParams.add("dateTime", dateTime);
+        if (password != null)
+            formParams.add("password", password);
+        if (paramCallback != null)
+            formParams.add("callback", paramCallback);
+
+        final String[] accepts = { };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { 
+            "application/x-www-form-urlencoded"
+        };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] { "http_basic_test" };
+
+        ParameterizedTypeReference<Void> returnType = new ParameterizedTypeReference<Void>() {};
+        return apiClient.invokeAPI(path, HttpMethod.POST, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * To test enum parameters
+     * To test enum parameters
+     * <p><b>400</b> - Invalid request
+     * <p><b>404</b> - Not found
+     * @param enumHeaderStringArray Header parameter enum test (string array)
+     * @param enumHeaderString Header parameter enum test (string)
+     * @param enumQueryStringArray Query parameter enum test (string array)
+     * @param enumQueryString Query parameter enum test (string)
+     * @param enumQueryInteger Query parameter enum test (double)
+     * @param enumQueryDouble Query parameter enum test (double)
+     * @param enumFormStringArray Form parameter enum test (string array)
+     * @param enumFormString Form parameter enum test (string)
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Void> testEnumParameters(List<String> enumHeaderStringArray, String enumHeaderString, List<String> enumQueryStringArray, String enumQueryString, Integer enumQueryInteger, Double enumQueryDouble, List<String> enumFormStringArray, String enumFormString) throws RestClientException {
+        Object postBody = null;
+        
+        String path = UriComponentsBuilder.fromPath("/fake").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+        
+        queryParams.putAll(apiClient.parameterToMultiValueMap(ApiClient.CollectionFormat.valueOf("csv".toUpperCase()), "enum_query_string_array", enumQueryStringArray));
+        queryParams.putAll(apiClient.parameterToMultiValueMap(null, "enum_query_string", enumQueryString));
+        queryParams.putAll(apiClient.parameterToMultiValueMap(null, "enum_query_integer", enumQueryInteger));
+        queryParams.putAll(apiClient.parameterToMultiValueMap(null, "enum_query_double", enumQueryDouble));
+        
+        if (enumHeaderStringArray != null)
+        headerParams.add("enum_header_string_array", apiClient.parameterToString(enumHeaderStringArray));
+        if (enumHeaderString != null)
+        headerParams.add("enum_header_string", apiClient.parameterToString(enumHeaderString));
+        
+        if (enumFormStringArray != null)
+            formParams.add("enum_form_string_array", enumFormStringArray);
+        if (enumFormString != null)
+            formParams.add("enum_form_string", enumFormString);
+
+        final String[] accepts = { };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { 
+            "application/x-www-form-urlencoded"
+        };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<Void> returnType = new ParameterizedTypeReference<Void>() {};
+        return apiClient.invokeAPI(path, HttpMethod.GET, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * test inline additionalProperties
+     * 
+     * <p><b>200</b> - successful operation
+     * @param requestBody request body
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Void> testInlineAdditionalProperties(Map<String, String> requestBody) throws RestClientException {
+        Object postBody = requestBody;
+        
+        // verify the required parameter 'requestBody' is set
+        if (requestBody == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'requestBody' when calling testInlineAdditionalProperties");
+        }
+        
+        String path = UriComponentsBuilder.fromPath("/fake/inline-additionalProperties").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { 
+            "application/json"
+        };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<Void> returnType = new ParameterizedTypeReference<Void>() {};
+        return apiClient.invokeAPI(path, HttpMethod.POST, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * test json serialization of form data
+     * 
+     * <p><b>200</b> - successful operation
+     * @param param field1
+     * @param param2 field2
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Void> testJsonFormData(String param, String param2) throws RestClientException {
+        Object postBody = null;
+        
+        // verify the required parameter 'param' is set
+        if (param == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'param' when calling testJsonFormData");
+        }
+        
+        // verify the required parameter 'param2' is set
+        if (param2 == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'param2' when calling testJsonFormData");
+        }
+        
+        String path = UriComponentsBuilder.fromPath("/fake/jsonFormData").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+        
+        if (param != null)
+            formParams.add("param", param);
+        if (param2 != null)
+            formParams.add("param2", param2);
+
+        final String[] accepts = { };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { 
+            "application/x-www-form-urlencoded"
+        };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<Void> returnType = new ParameterizedTypeReference<Void>() {};
+        return apiClient.invokeAPI(path, HttpMethod.GET, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+}

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java

@@ -0,0 +1,84 @@
+package org.openapitools.client.api;
+
+import org.openapitools.client.ApiClient;
+
+import org.openapitools.client.model.Client;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.client.RestClientException;
+import org.springframework.web.client.HttpClientErrorException;
+import org.springframework.web.util.UriComponentsBuilder;
+import org.springframework.core.ParameterizedTypeReference;
+import org.springframework.core.io.FileSystemResource;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import reactor.core.publisher.Mono;
+import reactor.core.publisher.Flux;
+
+
+public class FakeClassnameTags123Api {
+    private ApiClient apiClient;
+
+    public FakeClassnameTags123Api() {
+        this(new ApiClient());
+    }
+
+    @Autowired
+    public FakeClassnameTags123Api(ApiClient apiClient) {
+        this.apiClient = apiClient;
+    }
+
+    public ApiClient getApiClient() {
+        return apiClient;
+    }
+
+    public void setApiClient(ApiClient apiClient) {
+        this.apiClient = apiClient;
+    }
+
+    /**
+     * To test class name in snake case
+     * To test class name in snake case
+     * <p><b>200</b> - successful operation
+     * @param client client model
+     * @return Client
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Client> testClassname(Client client) throws RestClientException {
+        Object postBody = client;
+        
+        // verify the required parameter 'client' is set
+        if (client == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'client' when calling testClassname");
+        }
+        
+        String path = UriComponentsBuilder.fromPath("/fake_classname_test").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { 
+            "application/json"
+        };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { 
+            "application/json"
+        };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] { "api_key_query" };
+
+        ParameterizedTypeReference<Client> returnType = new ParameterizedTypeReference<Client>() {};
+        return apiClient.invokeAPI(path, HttpMethod.PATCH, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+}

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/PetApi.java

@@ -0,0 +1,409 @@
+package org.openapitools.client.api;
+
+import org.openapitools.client.ApiClient;
+
+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 org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.client.RestClientException;
+import org.springframework.web.client.HttpClientErrorException;
+import org.springframework.web.util.UriComponentsBuilder;
+import org.springframework.core.ParameterizedTypeReference;
+import org.springframework.core.io.FileSystemResource;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import reactor.core.publisher.Mono;
+import reactor.core.publisher.Flux;
+
+
+public class PetApi {
+    private ApiClient apiClient;
+
+    public PetApi() {
+        this(new ApiClient());
+    }
+
+    @Autowired
+    public PetApi(ApiClient apiClient) {
+        this.apiClient = apiClient;
+    }
+
+    public ApiClient getApiClient() {
+        return apiClient;
+    }
+
+    public void setApiClient(ApiClient apiClient) {
+        this.apiClient = apiClient;
+    }
+
+    /**
+     * Add a new pet to the store
+     * 
+     * <p><b>405</b> - Invalid input
+     * @param pet Pet object that needs to be added to the store
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Void> addPet(Pet pet) throws RestClientException {
+        Object postBody = pet;
+        
+        // verify the required parameter 'pet' is set
+        if (pet == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'pet' when calling addPet");
+        }
+        
+        String path = UriComponentsBuilder.fromPath("/pet").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { 
+            "application/json", "application/xml"
+        };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] { "petstore_auth" };
+
+        ParameterizedTypeReference<Void> returnType = new ParameterizedTypeReference<Void>() {};
+        return apiClient.invokeAPI(path, HttpMethod.POST, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * Deletes a pet
+     * 
+     * <p><b>400</b> - Invalid pet value
+     * @param petId Pet id to delete
+     * @param apiKey The apiKey parameter
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Void> deletePet(Long petId, String apiKey) throws RestClientException {
+        Object postBody = null;
+        
+        // verify the required parameter 'petId' is set
+        if (petId == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'petId' when calling deletePet");
+        }
+        
+        // create path and map variables
+        final Map<String, Object> uriVariables = new HashMap<String, Object>();
+        uriVariables.put("petId", petId);
+        String path = UriComponentsBuilder.fromPath("/pet/{petId}").buildAndExpand(uriVariables).toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+        
+        if (apiKey != null)
+        headerParams.add("api_key", apiClient.parameterToString(apiKey));
+
+        final String[] accepts = { };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] { "petstore_auth" };
+
+        ParameterizedTypeReference<Void> returnType = new ParameterizedTypeReference<Void>() {};
+        return apiClient.invokeAPI(path, HttpMethod.DELETE, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * Finds Pets by status
+     * Multiple status values can be provided with comma separated strings
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid status value
+     * @param status Status values that need to be considered for filter
+     * @return List&lt;Pet&gt;
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Flux<Pet> findPetsByStatus(List<String> status) throws RestClientException {
+        Object postBody = null;
+        
+        // verify the required parameter 'status' is set
+        if (status == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'status' when calling findPetsByStatus");
+        }
+        
+        String path = UriComponentsBuilder.fromPath("/pet/findByStatus").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+        
+        queryParams.putAll(apiClient.parameterToMultiValueMap(ApiClient.CollectionFormat.valueOf("csv".toUpperCase()), "status", status));
+
+        final String[] accepts = { 
+            "application/xml", "application/json"
+        };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] { "petstore_auth" };
+
+        ParameterizedTypeReference<Pet> returnType = new ParameterizedTypeReference<Pet>() {};
+        return apiClient.invokeFluxAPI(path, HttpMethod.GET, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * Finds Pets by tags
+     * Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid tag value
+     * @param tags Tags to filter by
+     * @return List&lt;Pet&gt;
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Flux<Pet> findPetsByTags(List<String> tags) throws RestClientException {
+        Object postBody = null;
+        
+        // verify the required parameter 'tags' is set
+        if (tags == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'tags' when calling findPetsByTags");
+        }
+        
+        String path = UriComponentsBuilder.fromPath("/pet/findByTags").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+        
+        queryParams.putAll(apiClient.parameterToMultiValueMap(ApiClient.CollectionFormat.valueOf("csv".toUpperCase()), "tags", tags));
+
+        final String[] accepts = { 
+            "application/xml", "application/json"
+        };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] { "petstore_auth" };
+
+        ParameterizedTypeReference<Pet> returnType = new ParameterizedTypeReference<Pet>() {};
+        return apiClient.invokeFluxAPI(path, HttpMethod.GET, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * Find pet by ID
+     * Returns a single pet
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid ID supplied
+     * <p><b>404</b> - Pet not found
+     * @param petId ID of pet to return
+     * @return Pet
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Pet> getPetById(Long petId) throws RestClientException {
+        Object postBody = null;
+        
+        // verify the required parameter 'petId' is set
+        if (petId == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'petId' when calling getPetById");
+        }
+        
+        // create path and map variables
+        final Map<String, Object> uriVariables = new HashMap<String, Object>();
+        uriVariables.put("petId", petId);
+        String path = UriComponentsBuilder.fromPath("/pet/{petId}").buildAndExpand(uriVariables).toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { 
+            "application/xml", "application/json"
+        };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] { "api_key" };
+
+        ParameterizedTypeReference<Pet> returnType = new ParameterizedTypeReference<Pet>() {};
+        return apiClient.invokeAPI(path, HttpMethod.GET, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * Update an existing pet
+     * 
+     * <p><b>400</b> - Invalid ID supplied
+     * <p><b>404</b> - Pet not found
+     * <p><b>405</b> - Validation exception
+     * @param pet Pet object that needs to be added to the store
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Void> updatePet(Pet pet) throws RestClientException {
+        Object postBody = pet;
+        
+        // verify the required parameter 'pet' is set
+        if (pet == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'pet' when calling updatePet");
+        }
+        
+        String path = UriComponentsBuilder.fromPath("/pet").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { 
+            "application/json", "application/xml"
+        };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] { "petstore_auth" };
+
+        ParameterizedTypeReference<Void> returnType = new ParameterizedTypeReference<Void>() {};
+        return apiClient.invokeAPI(path, HttpMethod.PUT, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * Updates a pet in the store with form data
+     * 
+     * <p><b>405</b> - Invalid input
+     * @param petId ID of pet that needs to be updated
+     * @param name Updated name of the pet
+     * @param status Updated status of the pet
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Void> updatePetWithForm(Long petId, String name, String status) throws RestClientException {
+        Object postBody = null;
+        
+        // verify the required parameter 'petId' is set
+        if (petId == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'petId' when calling updatePetWithForm");
+        }
+        
+        // create path and map variables
+        final Map<String, Object> uriVariables = new HashMap<String, Object>();
+        uriVariables.put("petId", petId);
+        String path = UriComponentsBuilder.fromPath("/pet/{petId}").buildAndExpand(uriVariables).toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+        
+        if (name != null)
+            formParams.add("name", name);
+        if (status != null)
+            formParams.add("status", status);
+
+        final String[] accepts = { };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { 
+            "application/x-www-form-urlencoded"
+        };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] { "petstore_auth" };
+
+        ParameterizedTypeReference<Void> returnType = new ParameterizedTypeReference<Void>() {};
+        return apiClient.invokeAPI(path, HttpMethod.POST, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * uploads an image
+     * 
+     * <p><b>200</b> - successful operation
+     * @param petId ID of pet to update
+     * @param additionalMetadata Additional data to pass to server
+     * @param file file to upload
+     * @return ModelApiResponse
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<ModelApiResponse> uploadFile(Long petId, String additionalMetadata, File file) throws RestClientException {
+        Object postBody = null;
+        
+        // verify the required parameter 'petId' is set
+        if (petId == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'petId' when calling uploadFile");
+        }
+        
+        // create path and map variables
+        final Map<String, Object> uriVariables = new HashMap<String, Object>();
+        uriVariables.put("petId", petId);
+        String path = UriComponentsBuilder.fromPath("/pet/{petId}/uploadImage").buildAndExpand(uriVariables).toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+        
+        if (additionalMetadata != null)
+            formParams.add("additionalMetadata", additionalMetadata);
+        if (file != null)
+            formParams.add("file", new FileSystemResource(file));
+
+        final String[] accepts = { 
+            "application/json"
+        };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { 
+            "multipart/form-data"
+        };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] { "petstore_auth" };
+
+        ParameterizedTypeReference<ModelApiResponse> returnType = new ParameterizedTypeReference<ModelApiResponse>() {};
+        return apiClient.invokeAPI(path, HttpMethod.POST, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * uploads an image (required)
+     * 
+     * <p><b>200</b> - successful operation
+     * @param petId ID of pet to update
+     * @param file file to upload
+     * @param additionalMetadata Additional data to pass to server
+     * @return ModelApiResponse
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<ModelApiResponse> uploadFileWithRequiredFile(Long petId, File file, String additionalMetadata) throws RestClientException {
+        Object postBody = null;
+        
+        // verify the required parameter 'petId' is set
+        if (petId == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'petId' when calling uploadFileWithRequiredFile");
+        }
+        
+        // verify the required parameter 'file' is set
+        if (file == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'file' when calling uploadFileWithRequiredFile");
+        }
+        
+        // create path and map variables
+        final Map<String, Object> uriVariables = new HashMap<String, Object>();
+        uriVariables.put("petId", petId);
+        String path = UriComponentsBuilder.fromPath("/fake/{petId}/uploadImageWithRequiredFile").buildAndExpand(uriVariables).toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+        
+        if (additionalMetadata != null)
+            formParams.add("additionalMetadata", additionalMetadata);
+        if (file != null)
+            formParams.add("file", new FileSystemResource(file));
+
+        final String[] accepts = { 
+            "application/json"
+        };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { 
+            "multipart/form-data"
+        };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] { "petstore_auth" };
+
+        ParameterizedTypeReference<ModelApiResponse> returnType = new ParameterizedTypeReference<ModelApiResponse>() {};
+        return apiClient.invokeAPI(path, HttpMethod.POST, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+}

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/StoreApi.java

@@ -0,0 +1,185 @@
+package org.openapitools.client.api;
+
+import org.openapitools.client.ApiClient;
+
+import org.openapitools.client.model.Order;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.client.RestClientException;
+import org.springframework.web.client.HttpClientErrorException;
+import org.springframework.web.util.UriComponentsBuilder;
+import org.springframework.core.ParameterizedTypeReference;
+import org.springframework.core.io.FileSystemResource;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import reactor.core.publisher.Mono;
+import reactor.core.publisher.Flux;
+
+
+public class StoreApi {
+    private ApiClient apiClient;
+
+    public StoreApi() {
+        this(new ApiClient());
+    }
+
+    @Autowired
+    public StoreApi(ApiClient apiClient) {
+        this.apiClient = apiClient;
+    }
+
+    public ApiClient getApiClient() {
+        return apiClient;
+    }
+
+    public void setApiClient(ApiClient apiClient) {
+        this.apiClient = apiClient;
+    }
+
+    /**
+     * Delete purchase order by ID
+     * For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors
+     * <p><b>400</b> - Invalid ID supplied
+     * <p><b>404</b> - Order not found
+     * @param orderId ID of the order that needs to be deleted
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Void> deleteOrder(String orderId) throws RestClientException {
+        Object postBody = null;
+        
+        // verify the required parameter 'orderId' is set
+        if (orderId == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'orderId' when calling deleteOrder");
+        }
+        
+        // create path and map variables
+        final Map<String, Object> uriVariables = new HashMap<String, Object>();
+        uriVariables.put("order_id", orderId);
+        String path = UriComponentsBuilder.fromPath("/store/order/{order_id}").buildAndExpand(uriVariables).toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<Void> returnType = new ParameterizedTypeReference<Void>() {};
+        return apiClient.invokeAPI(path, HttpMethod.DELETE, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * Returns pet inventories by status
+     * Returns a map of status codes to quantities
+     * <p><b>200</b> - successful operation
+     * @return Map&lt;String, Integer&gt;
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Map<String, Integer>> getInventory() throws RestClientException {
+        Object postBody = null;
+        
+        String path = UriComponentsBuilder.fromPath("/store/inventory").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { 
+            "application/json"
+        };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] { "api_key" };
+
+        ParameterizedTypeReference<Map<String, Integer>> returnType = new ParameterizedTypeReference<Map<String, Integer>>() {};
+        return apiClient.invokeAPI(path, HttpMethod.GET, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * Find purchase order by ID
+     * For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid ID supplied
+     * <p><b>404</b> - Order not found
+     * @param orderId ID of pet that needs to be fetched
+     * @return Order
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Order> getOrderById(Long orderId) throws RestClientException {
+        Object postBody = null;
+        
+        // verify the required parameter 'orderId' is set
+        if (orderId == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'orderId' when calling getOrderById");
+        }
+        
+        // create path and map variables
+        final Map<String, Object> uriVariables = new HashMap<String, Object>();
+        uriVariables.put("order_id", orderId);
+        String path = UriComponentsBuilder.fromPath("/store/order/{order_id}").buildAndExpand(uriVariables).toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { 
+            "application/xml", "application/json"
+        };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<Order> returnType = new ParameterizedTypeReference<Order>() {};
+        return apiClient.invokeAPI(path, HttpMethod.GET, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * Place an order for a pet
+     * 
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid Order
+     * @param order order placed for purchasing the pet
+     * @return Order
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Order> placeOrder(Order order) throws RestClientException {
+        Object postBody = order;
+        
+        // verify the required parameter 'order' is set
+        if (order == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'order' when calling placeOrder");
+        }
+        
+        String path = UriComponentsBuilder.fromPath("/store/order").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { 
+            "application/xml", "application/json"
+        };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<Order> returnType = new ParameterizedTypeReference<Order>() {};
+        return apiClient.invokeAPI(path, HttpMethod.POST, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+}

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/UserApi.java

@@ -0,0 +1,325 @@
+package org.openapitools.client.api;
+
+import org.openapitools.client.ApiClient;
+
+import org.openapitools.client.model.User;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.client.RestClientException;
+import org.springframework.web.client.HttpClientErrorException;
+import org.springframework.web.util.UriComponentsBuilder;
+import org.springframework.core.ParameterizedTypeReference;
+import org.springframework.core.io.FileSystemResource;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import reactor.core.publisher.Mono;
+import reactor.core.publisher.Flux;
+
+
+public class UserApi {
+    private ApiClient apiClient;
+
+    public UserApi() {
+        this(new ApiClient());
+    }
+
+    @Autowired
+    public UserApi(ApiClient apiClient) {
+        this.apiClient = apiClient;
+    }
+
+    public ApiClient getApiClient() {
+        return apiClient;
+    }
+
+    public void setApiClient(ApiClient apiClient) {
+        this.apiClient = apiClient;
+    }
+
+    /**
+     * Create user
+     * This can only be done by the logged in user.
+     * <p><b>0</b> - successful operation
+     * @param user Created user object
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Void> createUser(User user) throws RestClientException {
+        Object postBody = user;
+        
+        // verify the required parameter 'user' is set
+        if (user == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'user' when calling createUser");
+        }
+        
+        String path = UriComponentsBuilder.fromPath("/user").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<Void> returnType = new ParameterizedTypeReference<Void>() {};
+        return apiClient.invokeAPI(path, HttpMethod.POST, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * Creates list of users with given input array
+     * 
+     * <p><b>0</b> - successful operation
+     * @param user List of user object
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Void> createUsersWithArrayInput(List<User> user) throws RestClientException {
+        Object postBody = user;
+        
+        // verify the required parameter 'user' is set
+        if (user == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'user' when calling createUsersWithArrayInput");
+        }
+        
+        String path = UriComponentsBuilder.fromPath("/user/createWithArray").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<Void> returnType = new ParameterizedTypeReference<Void>() {};
+        return apiClient.invokeAPI(path, HttpMethod.POST, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * Creates list of users with given input array
+     * 
+     * <p><b>0</b> - successful operation
+     * @param user List of user object
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Void> createUsersWithListInput(List<User> user) throws RestClientException {
+        Object postBody = user;
+        
+        // verify the required parameter 'user' is set
+        if (user == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'user' when calling createUsersWithListInput");
+        }
+        
+        String path = UriComponentsBuilder.fromPath("/user/createWithList").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<Void> returnType = new ParameterizedTypeReference<Void>() {};
+        return apiClient.invokeAPI(path, HttpMethod.POST, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * Delete user
+     * This can only be done by the logged in user.
+     * <p><b>400</b> - Invalid username supplied
+     * <p><b>404</b> - User not found
+     * @param username The name that needs to be deleted
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Void> deleteUser(String username) throws RestClientException {
+        Object postBody = null;
+        
+        // verify the required parameter 'username' is set
+        if (username == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'username' when calling deleteUser");
+        }
+        
+        // create path and map variables
+        final Map<String, Object> uriVariables = new HashMap<String, Object>();
+        uriVariables.put("username", username);
+        String path = UriComponentsBuilder.fromPath("/user/{username}").buildAndExpand(uriVariables).toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<Void> returnType = new ParameterizedTypeReference<Void>() {};
+        return apiClient.invokeAPI(path, HttpMethod.DELETE, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * Get user by user name
+     * 
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid username supplied
+     * <p><b>404</b> - User not found
+     * @param username The name that needs to be fetched. Use user1 for testing.
+     * @return User
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<User> getUserByName(String username) throws RestClientException {
+        Object postBody = null;
+        
+        // verify the required parameter 'username' is set
+        if (username == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'username' when calling getUserByName");
+        }
+        
+        // create path and map variables
+        final Map<String, Object> uriVariables = new HashMap<String, Object>();
+        uriVariables.put("username", username);
+        String path = UriComponentsBuilder.fromPath("/user/{username}").buildAndExpand(uriVariables).toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { 
+            "application/xml", "application/json"
+        };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<User> returnType = new ParameterizedTypeReference<User>() {};
+        return apiClient.invokeAPI(path, HttpMethod.GET, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * Logs user into the system
+     * 
+     * <p><b>200</b> - successful operation
+     * <p><b>400</b> - Invalid username/password supplied
+     * @param username The user name for login
+     * @param password The password for login in clear text
+     * @return String
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<String> loginUser(String username, String password) throws RestClientException {
+        Object postBody = null;
+        
+        // verify the required parameter 'username' is set
+        if (username == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'username' when calling loginUser");
+        }
+        
+        // verify the required parameter 'password' is set
+        if (password == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'password' when calling loginUser");
+        }
+        
+        String path = UriComponentsBuilder.fromPath("/user/login").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+        
+        queryParams.putAll(apiClient.parameterToMultiValueMap(null, "username", username));
+        queryParams.putAll(apiClient.parameterToMultiValueMap(null, "password", password));
+
+        final String[] accepts = { 
+            "application/xml", "application/json"
+        };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<String> returnType = new ParameterizedTypeReference<String>() {};
+        return apiClient.invokeAPI(path, HttpMethod.GET, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * Logs out current logged in user session
+     * 
+     * <p><b>0</b> - successful operation
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Void> logoutUser() throws RestClientException {
+        Object postBody = null;
+        
+        String path = UriComponentsBuilder.fromPath("/user/logout").build().toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<Void> returnType = new ParameterizedTypeReference<Void>() {};
+        return apiClient.invokeAPI(path, HttpMethod.GET, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+    /**
+     * Updated user
+     * This can only be done by the logged in user.
+     * <p><b>400</b> - Invalid user supplied
+     * <p><b>404</b> - User not found
+     * @param username name that need to be deleted
+     * @param user Updated user object
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     */
+    public Mono<Void> updateUser(String username, User user) throws RestClientException {
+        Object postBody = user;
+        
+        // verify the required parameter 'username' is set
+        if (username == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'username' when calling updateUser");
+        }
+        
+        // verify the required parameter 'user' is set
+        if (user == null) {
+            throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Missing the required parameter 'user' when calling updateUser");
+        }
+        
+        // create path and map variables
+        final Map<String, Object> uriVariables = new HashMap<String, Object>();
+        uriVariables.put("username", username);
+        String path = UriComponentsBuilder.fromPath("/user/{username}").buildAndExpand(uriVariables).toUriString();
+        
+        final MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+        final HttpHeaders headerParams = new HttpHeaders();
+        final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
+
+        final String[] accepts = { };
+        final List<MediaType> accept = apiClient.selectHeaderAccept(accepts);
+        final String[] contentTypes = { };
+        final MediaType contentType = apiClient.selectHeaderContentType(contentTypes);
+
+        String[] authNames = new String[] {  };
+
+        ParameterizedTypeReference<Void> returnType = new ParameterizedTypeReference<Void>() {};
+        return apiClient.invokeAPI(path, HttpMethod.PUT, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
+    }
+}

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/auth/ApiKeyAuth.java

@@ -0,0 +1,60 @@
+package org.openapitools.client.auth;
+
+import org.springframework.http.HttpHeaders;
+import org.springframework.util.MultiValueMap;
+
+
+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(MultiValueMap<String, String> queryParams, HttpHeaders headerParams) {
+        if (apiKey == null) {
+            return;
+        }
+        String value;
+        if (apiKeyPrefix != null) {
+            value = apiKeyPrefix + " " + apiKey;
+        } else {
+            value = apiKey;
+        }
+        if (location.equals("query")) {
+            queryParams.add(paramName, value);
+        } else if (location.equals("header")) {
+            headerParams.add(paramName, value);
+       }
+    }
+}

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/auth/Authentication.java

@@ -0,0 +1,13 @@
+package org.openapitools.client.auth;
+
+import org.springframework.http.HttpHeaders;
+import org.springframework.util.MultiValueMap;
+
+public interface Authentication {
+    /** 
+     * Apply authentication settings to header and / or query parameters.
+     * @param queryParams The query parameters for the request 
+     * @param headerParams The header parameters for the request
+     */
+    public void applyToParams(MultiValueMap<String, String> queryParams, HttpHeaders headerParams);
+}

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/auth/HttpBasicAuth.java

@@ -0,0 +1,39 @@
+package org.openapitools.client.auth;
+
+import java.io.UnsupportedEncodingException;
+import java.nio.charset.StandardCharsets;
+
+import org.springframework.http.HttpHeaders;
+import org.springframework.util.Base64Utils;
+import org.springframework.util.MultiValueMap;
+
+
+public class HttpBasicAuth implements Authentication {
+    private String username;
+    private String password;
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    @Override
+    public void applyToParams(MultiValueMap<String, String> queryParams, HttpHeaders headerParams) {
+        if (username == null && password == null) {
+            return;
+        }
+        String str = (username == null ? "" : username) + ":" + (password == null ? "" : password);
+        headerParams.add(HttpHeaders.AUTHORIZATION, "Basic " + Base64Utils.encodeToString(str.getBytes(StandardCharsets.UTF_8)));
+    }
+}

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/auth/OAuth.java

@@ -0,0 +1,24 @@
+package org.openapitools.client.auth;
+
+import org.springframework.http.HttpHeaders;
+import org.springframework.util.MultiValueMap;
+
+
+public class OAuth implements Authentication {
+    private String accessToken;
+
+    public String getAccessToken() {
+        return accessToken;
+    }
+
+    public void setAccessToken(String accessToken) {
+        this.accessToken = accessToken;
+    }
+
+    @Override
+    public void applyToParams(MultiValueMap<String, String> queryParams, HttpHeaders headerParams) {
+        if (accessToken != null) {
+            headerParams.add(HttpHeaders.AUTHORIZATION, "Bearer " + accessToken);
+        }
+    }
+}

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/auth/OAuthFlow.java

@@ -0,0 +1,5 @@
+package org.openapitools.client.auth;
+
+public enum OAuthFlow {
+    accessCode, implicit, password, application
+}

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/model/AdditionalPropertiesClass.java

@@ -0,0 +1,133 @@
+/*
+ * 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;
+
+/**
+ * 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
+  **/
+  @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/webclient/src/main/java/org/openapitools/client/model/Animal.java

@@ -0,0 +1,121 @@
+/*
+ * 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;
+
+/**
+ * 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
+  **/
+  @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/webclient/src/main/java/org/openapitools/client/model/AnimalFarm.java

@@ -0,0 +1,66 @@
+/*
+ * 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;
+
+/**
+ * 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/webclient/src/main/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnly.java

@@ -0,0 +1,102 @@
+/*
+ * 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;
+
+/**
+ * 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
+  **/
+  @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/webclient/src/main/java/org/openapitools/client/model/ArrayOfNumberOnly.java

@@ -0,0 +1,102 @@
+/*
+ * 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;
+
+/**
+ * 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
+  **/
+  @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/webclient/src/main/java/org/openapitools/client/model/ArrayTest.java

@@ -0,0 +1,164 @@
+/*
+ * 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;
+
+/**
+ * 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
+  **/
+  @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
+  **/
+  @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/webclient/src/main/java/org/openapitools/client/model/Capitalization.java

@@ -0,0 +1,206 @@
+/*
+ * 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;
+
+/**
+ * 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/webclient/src/main/java/org/openapitools/client/model/Cat.java

@@ -0,0 +1,93 @@
+/*
+ * 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;
+
+/**
+ * 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 isDeclawed() {
+    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/webclient/src/main/java/org/openapitools/client/model/Category.java

@@ -0,0 +1,114 @@
+/*
+ * 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;
+
+/**
+ * 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    ");
+  }
+
+}
+

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/model/ClassModel.java

@@ -0,0 +1,92 @@
+/*
+ * 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;
+
+/**
+ * Model for testing model with \"_class\" property
+ */
+@ApiModel(description = "Model for testing model with \"_class\" property")
+
+public class ClassModel {
+  @JsonProperty("_class")
+  private String propertyClass = null;
+
+  public ClassModel propertyClass(String propertyClass) {
+    this.propertyClass = propertyClass;
+    return this;
+  }
+
+   /**
+   * Get propertyClass
+   * @return propertyClass
+  **/
+  @ApiModelProperty(value = "")
+  public String getPropertyClass() {
+    return propertyClass;
+  }
+
+  public void setPropertyClass(String propertyClass) {
+    this.propertyClass = propertyClass;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ClassModel classModel = (ClassModel) o;
+    return Objects.equals(this.propertyClass, classModel.propertyClass);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(propertyClass);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ClassModel {\n");
+    
+    sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).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/webclient/src/main/java/org/openapitools/client/model/Client.java

@@ -0,0 +1,91 @@
+/*
+ * 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;
+
+/**
+ * Client
+ */
+
+public class Client {
+  @JsonProperty("client")
+  private String client = null;
+
+  public Client client(String client) {
+    this.client = client;
+    return this;
+  }
+
+   /**
+   * Get client
+   * @return client
+  **/
+  @ApiModelProperty(value = "")
+  public String getClient() {
+    return client;
+  }
+
+  public void setClient(String client) {
+    this.client = client;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Client client = (Client) o;
+    return Objects.equals(this.client, client.client);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(client);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Client {\n");
+    
+    sb.append("    client: ").append(toIndentedString(client)).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/webclient/src/main/java/org/openapitools/client/model/Dog.java

@@ -0,0 +1,93 @@
+/*
+ * 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;
+
+/**
+ * Dog
+ */
+
+public class Dog extends Animal {
+  @JsonProperty("breed")
+  private String breed = null;
+
+  public Dog breed(String breed) {
+    this.breed = breed;
+    return this;
+  }
+
+   /**
+   * Get breed
+   * @return breed
+  **/
+  @ApiModelProperty(value = "")
+  public String getBreed() {
+    return breed;
+  }
+
+  public void setBreed(String breed) {
+    this.breed = breed;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Dog dog = (Dog) o;
+    return Objects.equals(this.breed, dog.breed) &&
+        super.equals(o);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(breed, super.hashCode());
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Dog {\n");
+    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+    sb.append("    breed: ").append(toIndentedString(breed)).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/webclient/src/main/java/org/openapitools/client/model/EnumArrays.java

@@ -0,0 +1,194 @@
+/*
+ * 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;
+
+/**
+ * EnumArrays
+ */
+
+public class EnumArrays {
+  /**
+   * Gets or Sets justSymbol
+   */
+  public enum JustSymbolEnum {
+    GREATER_THAN_OR_EQUAL_TO(">="),
+    
+    DOLLAR("$");
+
+    private String value;
+
+    JustSymbolEnum(String value) {
+      this.value = value;
+    }
+
+    @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
+    public String toString() {
+      return String.valueOf(value);
+    }
+
+    @JsonCreator
+    public static JustSymbolEnum fromValue(String text) {
+      for (JustSymbolEnum b : JustSymbolEnum.values()) {
+        if (String.valueOf(b.value).equals(text)) {
+          return b;
+        }
+      }
+      return null;
+    }
+  }
+
+  @JsonProperty("just_symbol")
+  private JustSymbolEnum justSymbol = null;
+
+  /**
+   * Gets or Sets arrayEnum
+   */
+  public enum ArrayEnumEnum {
+    FISH("fish"),
+    
+    CRAB("crab");
+
+    private String value;
+
+    ArrayEnumEnum(String value) {
+      this.value = value;
+    }
+
+    @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
+    public String toString() {
+      return String.valueOf(value);
+    }
+
+    @JsonCreator
+    public static ArrayEnumEnum fromValue(String text) {
+      for (ArrayEnumEnum b : ArrayEnumEnum.values()) {
+        if (String.valueOf(b.value).equals(text)) {
+          return b;
+        }
+      }
+      return null;
+    }
+  }
+
+  @JsonProperty("array_enum")
+  private List<ArrayEnumEnum> arrayEnum = null;
+
+  public EnumArrays justSymbol(JustSymbolEnum justSymbol) {
+    this.justSymbol = justSymbol;
+    return this;
+  }
+
+   /**
+   * Get justSymbol
+   * @return justSymbol
+  **/
+  @ApiModelProperty(value = "")
+  public JustSymbolEnum getJustSymbol() {
+    return justSymbol;
+  }
+
+  public void setJustSymbol(JustSymbolEnum justSymbol) {
+    this.justSymbol = justSymbol;
+  }
+
+  public EnumArrays arrayEnum(List<ArrayEnumEnum> arrayEnum) {
+    this.arrayEnum = arrayEnum;
+    return this;
+  }
+
+  public EnumArrays addArrayEnumItem(ArrayEnumEnum arrayEnumItem) {
+    if (this.arrayEnum == null) {
+      this.arrayEnum = new ArrayList<>();
+    }
+    this.arrayEnum.add(arrayEnumItem);
+    return this;
+  }
+
+   /**
+   * Get arrayEnum
+   * @return arrayEnum
+  **/
+  @ApiModelProperty(value = "")
+  public List<ArrayEnumEnum> getArrayEnum() {
+    return arrayEnum;
+  }
+
+  public void setArrayEnum(List<ArrayEnumEnum> arrayEnum) {
+    this.arrayEnum = arrayEnum;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    EnumArrays enumArrays = (EnumArrays) o;
+    return Objects.equals(this.justSymbol, enumArrays.justSymbol) &&
+        Objects.equals(this.arrayEnum, enumArrays.arrayEnum);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(justSymbol, arrayEnum);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class EnumArrays {\n");
+    
+    sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
+    sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).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/webclient/src/main/java/org/openapitools/client/model/EnumClass.java

@@ -0,0 +1,59 @@
+/*
+ * 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.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+
+/**
+ * Gets or Sets EnumClass
+ */
+public enum EnumClass {
+  
+  _ABC("_abc"),
+  
+  _EFG("-efg"),
+  
+  _XYZ_("(xyz)");
+
+  private String value;
+
+  EnumClass(String value) {
+    this.value = value;
+  }
+
+  @JsonValue
+  public String getValue() {
+    return value;
+  }
+
+  @Override
+  public String toString() {
+    return String.valueOf(value);
+  }
+
+  @JsonCreator
+  public static EnumClass fromValue(String text) {
+    for (EnumClass b : EnumClass.values()) {
+      if (String.valueOf(b.value).equals(text)) {
+        return b;
+      }
+    }
+    return null;
+  }
+}
+

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/model/EnumTest.java

@@ -0,0 +1,328 @@
+/*
+ * 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.OuterEnum;
+
+/**
+ * EnumTest
+ */
+
+public class EnumTest {
+  /**
+   * Gets or Sets enumString
+   */
+  public enum EnumStringEnum {
+    UPPER("UPPER"),
+    
+    LOWER("lower"),
+    
+    EMPTY("");
+
+    private String value;
+
+    EnumStringEnum(String value) {
+      this.value = value;
+    }
+
+    @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
+    public String toString() {
+      return String.valueOf(value);
+    }
+
+    @JsonCreator
+    public static EnumStringEnum fromValue(String text) {
+      for (EnumStringEnum b : EnumStringEnum.values()) {
+        if (String.valueOf(b.value).equals(text)) {
+          return b;
+        }
+      }
+      return null;
+    }
+  }
+
+  @JsonProperty("enum_string")
+  private EnumStringEnum enumString = null;
+
+  /**
+   * Gets or Sets enumStringRequired
+   */
+  public enum EnumStringRequiredEnum {
+    UPPER("UPPER"),
+    
+    LOWER("lower"),
+    
+    EMPTY("");
+
+    private String value;
+
+    EnumStringRequiredEnum(String value) {
+      this.value = value;
+    }
+
+    @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
+    public String toString() {
+      return String.valueOf(value);
+    }
+
+    @JsonCreator
+    public static EnumStringRequiredEnum fromValue(String text) {
+      for (EnumStringRequiredEnum b : EnumStringRequiredEnum.values()) {
+        if (String.valueOf(b.value).equals(text)) {
+          return b;
+        }
+      }
+      return null;
+    }
+  }
+
+  @JsonProperty("enum_string_required")
+  private EnumStringRequiredEnum enumStringRequired = null;
+
+  /**
+   * Gets or Sets enumInteger
+   */
+  public enum EnumIntegerEnum {
+    NUMBER_1(1),
+    
+    NUMBER_MINUS_1(-1);
+
+    private Integer value;
+
+    EnumIntegerEnum(Integer value) {
+      this.value = value;
+    }
+
+    @JsonValue
+    public Integer getValue() {
+      return value;
+    }
+
+    @Override
+    public String toString() {
+      return String.valueOf(value);
+    }
+
+    @JsonCreator
+    public static EnumIntegerEnum fromValue(String text) {
+      for (EnumIntegerEnum b : EnumIntegerEnum.values()) {
+        if (String.valueOf(b.value).equals(text)) {
+          return b;
+        }
+      }
+      return null;
+    }
+  }
+
+  @JsonProperty("enum_integer")
+  private EnumIntegerEnum enumInteger = null;
+
+  /**
+   * Gets or Sets enumNumber
+   */
+  public enum EnumNumberEnum {
+    NUMBER_1_DOT_1(1.1),
+    
+    NUMBER_MINUS_1_DOT_2(-1.2);
+
+    private Double value;
+
+    EnumNumberEnum(Double value) {
+      this.value = value;
+    }
+
+    @JsonValue
+    public Double getValue() {
+      return value;
+    }
+
+    @Override
+    public String toString() {
+      return String.valueOf(value);
+    }
+
+    @JsonCreator
+    public static EnumNumberEnum fromValue(String text) {
+      for (EnumNumberEnum b : EnumNumberEnum.values()) {
+        if (String.valueOf(b.value).equals(text)) {
+          return b;
+        }
+      }
+      return null;
+    }
+  }
+
+  @JsonProperty("enum_number")
+  private EnumNumberEnum enumNumber = null;
+
+  @JsonProperty("outerEnum")
+  private OuterEnum outerEnum = null;
+
+  public EnumTest enumString(EnumStringEnum enumString) {
+    this.enumString = enumString;
+    return this;
+  }
+
+   /**
+   * Get enumString
+   * @return enumString
+  **/
+  @ApiModelProperty(value = "")
+  public EnumStringEnum getEnumString() {
+    return enumString;
+  }
+
+  public void setEnumString(EnumStringEnum enumString) {
+    this.enumString = enumString;
+  }
+
+  public EnumTest enumStringRequired(EnumStringRequiredEnum enumStringRequired) {
+    this.enumStringRequired = enumStringRequired;
+    return this;
+  }
+
+   /**
+   * Get enumStringRequired
+   * @return enumStringRequired
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public EnumStringRequiredEnum getEnumStringRequired() {
+    return enumStringRequired;
+  }
+
+  public void setEnumStringRequired(EnumStringRequiredEnum enumStringRequired) {
+    this.enumStringRequired = enumStringRequired;
+  }
+
+  public EnumTest enumInteger(EnumIntegerEnum enumInteger) {
+    this.enumInteger = enumInteger;
+    return this;
+  }
+
+   /**
+   * Get enumInteger
+   * @return enumInteger
+  **/
+  @ApiModelProperty(value = "")
+  public EnumIntegerEnum getEnumInteger() {
+    return enumInteger;
+  }
+
+  public void setEnumInteger(EnumIntegerEnum enumInteger) {
+    this.enumInteger = enumInteger;
+  }
+
+  public EnumTest enumNumber(EnumNumberEnum enumNumber) {
+    this.enumNumber = enumNumber;
+    return this;
+  }
+
+   /**
+   * Get enumNumber
+   * @return enumNumber
+  **/
+  @ApiModelProperty(value = "")
+  public EnumNumberEnum getEnumNumber() {
+    return enumNumber;
+  }
+
+  public void setEnumNumber(EnumNumberEnum enumNumber) {
+    this.enumNumber = enumNumber;
+  }
+
+  public EnumTest outerEnum(OuterEnum outerEnum) {
+    this.outerEnum = outerEnum;
+    return this;
+  }
+
+   /**
+   * Get outerEnum
+   * @return outerEnum
+  **/
+  @ApiModelProperty(value = "")
+  public OuterEnum getOuterEnum() {
+    return outerEnum;
+  }
+
+  public void setOuterEnum(OuterEnum outerEnum) {
+    this.outerEnum = outerEnum;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    EnumTest enumTest = (EnumTest) o;
+    return Objects.equals(this.enumString, enumTest.enumString) &&
+        Objects.equals(this.enumStringRequired, enumTest.enumStringRequired) &&
+        Objects.equals(this.enumInteger, enumTest.enumInteger) &&
+        Objects.equals(this.enumNumber, enumTest.enumNumber) &&
+        Objects.equals(this.outerEnum, enumTest.outerEnum);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(enumString, enumStringRequired, enumInteger, enumNumber, outerEnum);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class EnumTest {\n");
+    
+    sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
+    sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
+    sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
+    sb.append("    enumNumber: ").append(toIndentedString(enumNumber)).append("\n");
+    sb.append("    outerEnum: ").append(toIndentedString(outerEnum)).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/webclient/src/main/java/org/openapitools/client/model/FormatTest.java

@@ -0,0 +1,382 @@
+/*
+ * 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.io.File;
+import java.math.BigDecimal;
+import java.time.LocalDate;
+import java.time.OffsetDateTime;
+import java.util.UUID;
+
+/**
+ * FormatTest
+ */
+
+public class FormatTest {
+  @JsonProperty("integer")
+  private Integer integer = null;
+
+  @JsonProperty("int32")
+  private Integer int32 = null;
+
+  @JsonProperty("int64")
+  private Long int64 = null;
+
+  @JsonProperty("number")
+  private BigDecimal number = null;
+
+  @JsonProperty("float")
+  private Float _float = null;
+
+  @JsonProperty("double")
+  private Double _double = null;
+
+  @JsonProperty("string")
+  private String string = null;
+
+  @JsonProperty("byte")
+  private byte[] _byte = null;
+
+  @JsonProperty("binary")
+  private File binary = null;
+
+  @JsonProperty("date")
+  private LocalDate date = null;
+
+  @JsonProperty("dateTime")
+  private OffsetDateTime dateTime = null;
+
+  @JsonProperty("uuid")
+  private UUID uuid = null;
+
+  @JsonProperty("password")
+  private String password = null;
+
+  public FormatTest integer(Integer integer) {
+    this.integer = integer;
+    return this;
+  }
+
+   /**
+   * Get integer
+   * minimum: 10
+   * maximum: 100
+   * @return integer
+  **/
+  @ApiModelProperty(value = "")
+  public Integer getInteger() {
+    return integer;
+  }
+
+  public void setInteger(Integer integer) {
+    this.integer = integer;
+  }
+
+  public FormatTest int32(Integer int32) {
+    this.int32 = int32;
+    return this;
+  }
+
+   /**
+   * Get int32
+   * minimum: 20
+   * maximum: 200
+   * @return int32
+  **/
+  @ApiModelProperty(value = "")
+  public Integer getInt32() {
+    return int32;
+  }
+
+  public void setInt32(Integer int32) {
+    this.int32 = int32;
+  }
+
+  public FormatTest int64(Long int64) {
+    this.int64 = int64;
+    return this;
+  }
+
+   /**
+   * Get int64
+   * @return int64
+  **/
+  @ApiModelProperty(value = "")
+  public Long getInt64() {
+    return int64;
+  }
+
+  public void setInt64(Long int64) {
+    this.int64 = int64;
+  }
+
+  public FormatTest number(BigDecimal number) {
+    this.number = number;
+    return this;
+  }
+
+   /**
+   * Get number
+   * minimum: 32.1
+   * maximum: 543.2
+   * @return number
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public BigDecimal getNumber() {
+    return number;
+  }
+
+  public void setNumber(BigDecimal number) {
+    this.number = number;
+  }
+
+  public FormatTest _float(Float _float) {
+    this._float = _float;
+    return this;
+  }
+
+   /**
+   * Get _float
+   * minimum: 54.3
+   * maximum: 987.6
+   * @return _float
+  **/
+  @ApiModelProperty(value = "")
+  public Float getFloat() {
+    return _float;
+  }
+
+  public void setFloat(Float _float) {
+    this._float = _float;
+  }
+
+  public FormatTest _double(Double _double) {
+    this._double = _double;
+    return this;
+  }
+
+   /**
+   * Get _double
+   * minimum: 67.8
+   * maximum: 123.4
+   * @return _double
+  **/
+  @ApiModelProperty(value = "")
+  public Double getDouble() {
+    return _double;
+  }
+
+  public void setDouble(Double _double) {
+    this._double = _double;
+  }
+
+  public FormatTest string(String string) {
+    this.string = string;
+    return this;
+  }
+
+   /**
+   * Get string
+   * @return string
+  **/
+  @ApiModelProperty(value = "")
+  public String getString() {
+    return string;
+  }
+
+  public void setString(String string) {
+    this.string = string;
+  }
+
+  public FormatTest _byte(byte[] _byte) {
+    this._byte = _byte;
+    return this;
+  }
+
+   /**
+   * Get _byte
+   * @return _byte
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public byte[] getByte() {
+    return _byte;
+  }
+
+  public void setByte(byte[] _byte) {
+    this._byte = _byte;
+  }
+
+  public FormatTest binary(File binary) {
+    this.binary = binary;
+    return this;
+  }
+
+   /**
+   * Get binary
+   * @return binary
+  **/
+  @ApiModelProperty(value = "")
+  public File getBinary() {
+    return binary;
+  }
+
+  public void setBinary(File binary) {
+    this.binary = binary;
+  }
+
+  public FormatTest date(LocalDate date) {
+    this.date = date;
+    return this;
+  }
+
+   /**
+   * Get date
+   * @return date
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public LocalDate getDate() {
+    return date;
+  }
+
+  public void setDate(LocalDate date) {
+    this.date = date;
+  }
+
+  public FormatTest dateTime(OffsetDateTime dateTime) {
+    this.dateTime = dateTime;
+    return this;
+  }
+
+   /**
+   * Get dateTime
+   * @return dateTime
+  **/
+  @ApiModelProperty(value = "")
+  public OffsetDateTime getDateTime() {
+    return dateTime;
+  }
+
+  public void setDateTime(OffsetDateTime dateTime) {
+    this.dateTime = dateTime;
+  }
+
+  public FormatTest uuid(UUID uuid) {
+    this.uuid = uuid;
+    return this;
+  }
+
+   /**
+   * Get uuid
+   * @return uuid
+  **/
+  @ApiModelProperty(value = "")
+  public UUID getUuid() {
+    return uuid;
+  }
+
+  public void setUuid(UUID uuid) {
+    this.uuid = uuid;
+  }
+
+  public FormatTest password(String password) {
+    this.password = password;
+    return this;
+  }
+
+   /**
+   * Get password
+   * @return password
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public String getPassword() {
+    return password;
+  }
+
+  public void setPassword(String password) {
+    this.password = password;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    FormatTest formatTest = (FormatTest) o;
+    return Objects.equals(this.integer, formatTest.integer) &&
+        Objects.equals(this.int32, formatTest.int32) &&
+        Objects.equals(this.int64, formatTest.int64) &&
+        Objects.equals(this.number, formatTest.number) &&
+        Objects.equals(this._float, formatTest._float) &&
+        Objects.equals(this._double, formatTest._double) &&
+        Objects.equals(this.string, formatTest.string) &&
+        Arrays.equals(this._byte, formatTest._byte) &&
+        Objects.equals(this.binary, formatTest.binary) &&
+        Objects.equals(this.date, formatTest.date) &&
+        Objects.equals(this.dateTime, formatTest.dateTime) &&
+        Objects.equals(this.uuid, formatTest.uuid) &&
+        Objects.equals(this.password, formatTest.password);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(integer, int32, int64, number, _float, _double, string, Arrays.hashCode(_byte), binary, date, dateTime, uuid, password);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class FormatTest {\n");
+    
+    sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
+    sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
+    sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
+    sb.append("    number: ").append(toIndentedString(number)).append("\n");
+    sb.append("    _float: ").append(toIndentedString(_float)).append("\n");
+    sb.append("    _double: ").append(toIndentedString(_double)).append("\n");
+    sb.append("    string: ").append(toIndentedString(string)).append("\n");
+    sb.append("    _byte: ").append(toIndentedString(_byte)).append("\n");
+    sb.append("    binary: ").append(toIndentedString(binary)).append("\n");
+    sb.append("    date: ").append(toIndentedString(date)).append("\n");
+    sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
+    sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
+    sb.append("    password: ").append(toIndentedString(password)).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/webclient/src/main/java/org/openapitools/client/model/HasOnlyReadOnly.java

@@ -0,0 +1,96 @@
+/*
+ * 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;
+
+/**
+ * HasOnlyReadOnly
+ */
+
+public class HasOnlyReadOnly {
+  @JsonProperty("bar")
+  private String bar = null;
+
+  @JsonProperty("foo")
+  private String foo = null;
+
+   /**
+   * Get bar
+   * @return bar
+  **/
+  @ApiModelProperty(value = "")
+  public String getBar() {
+    return bar;
+  }
+
+   /**
+   * Get foo
+   * @return foo
+  **/
+  @ApiModelProperty(value = "")
+  public String getFoo() {
+    return foo;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    HasOnlyReadOnly hasOnlyReadOnly = (HasOnlyReadOnly) o;
+    return Objects.equals(this.bar, hasOnlyReadOnly.bar) &&
+        Objects.equals(this.foo, hasOnlyReadOnly.foo);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(bar, foo);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class HasOnlyReadOnly {\n");
+    
+    sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
+    sb.append("    foo: ").append(toIndentedString(foo)).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/webclient/src/main/java/org/openapitools/client/model/MapTest.java

@@ -0,0 +1,223 @@
+/*
+ * 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 org.openapitools.client.model.StringBooleanMap;
+
+/**
+ * MapTest
+ */
+
+public class MapTest {
+  @JsonProperty("map_map_of_string")
+  private Map<String, Map<String, String>> mapMapOfString = null;
+
+  /**
+   * Gets or Sets inner
+   */
+  public enum InnerEnum {
+    UPPER("UPPER"),
+    
+    LOWER("lower");
+
+    private String value;
+
+    InnerEnum(String value) {
+      this.value = value;
+    }
+
+    @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
+    public String toString() {
+      return String.valueOf(value);
+    }
+
+    @JsonCreator
+    public static InnerEnum fromValue(String text) {
+      for (InnerEnum b : InnerEnum.values()) {
+        if (String.valueOf(b.value).equals(text)) {
+          return b;
+        }
+      }
+      return null;
+    }
+  }
+
+  @JsonProperty("map_of_enum_string")
+  private Map<String, InnerEnum> mapOfEnumString = null;
+
+  @JsonProperty("direct_map")
+  private Map<String, Boolean> directMap = null;
+
+  @JsonProperty("indirect_map")
+  private StringBooleanMap indirectMap = null;
+
+  public MapTest mapMapOfString(Map<String, Map<String, String>> mapMapOfString) {
+    this.mapMapOfString = mapMapOfString;
+    return this;
+  }
+
+  public MapTest putMapMapOfStringItem(String key, Map<String, String> mapMapOfStringItem) {
+    if (this.mapMapOfString == null) {
+      this.mapMapOfString = new HashMap<>();
+    }
+    this.mapMapOfString.put(key, mapMapOfStringItem);
+    return this;
+  }
+
+   /**
+   * Get mapMapOfString
+   * @return mapMapOfString
+  **/
+  @ApiModelProperty(value = "")
+  public Map<String, Map<String, String>> getMapMapOfString() {
+    return mapMapOfString;
+  }
+
+  public void setMapMapOfString(Map<String, Map<String, String>> mapMapOfString) {
+    this.mapMapOfString = mapMapOfString;
+  }
+
+  public MapTest mapOfEnumString(Map<String, InnerEnum> mapOfEnumString) {
+    this.mapOfEnumString = mapOfEnumString;
+    return this;
+  }
+
+  public MapTest putMapOfEnumStringItem(String key, InnerEnum mapOfEnumStringItem) {
+    if (this.mapOfEnumString == null) {
+      this.mapOfEnumString = new HashMap<>();
+    }
+    this.mapOfEnumString.put(key, mapOfEnumStringItem);
+    return this;
+  }
+
+   /**
+   * Get mapOfEnumString
+   * @return mapOfEnumString
+  **/
+  @ApiModelProperty(value = "")
+  public Map<String, InnerEnum> getMapOfEnumString() {
+    return mapOfEnumString;
+  }
+
+  public void setMapOfEnumString(Map<String, InnerEnum> mapOfEnumString) {
+    this.mapOfEnumString = mapOfEnumString;
+  }
+
+  public MapTest directMap(Map<String, Boolean> directMap) {
+    this.directMap = directMap;
+    return this;
+  }
+
+  public MapTest putDirectMapItem(String key, Boolean directMapItem) {
+    if (this.directMap == null) {
+      this.directMap = new HashMap<>();
+    }
+    this.directMap.put(key, directMapItem);
+    return this;
+  }
+
+   /**
+   * Get directMap
+   * @return directMap
+  **/
+  @ApiModelProperty(value = "")
+  public Map<String, Boolean> getDirectMap() {
+    return directMap;
+  }
+
+  public void setDirectMap(Map<String, Boolean> directMap) {
+    this.directMap = directMap;
+  }
+
+  public MapTest indirectMap(StringBooleanMap indirectMap) {
+    this.indirectMap = indirectMap;
+    return this;
+  }
+
+   /**
+   * Get indirectMap
+   * @return indirectMap
+  **/
+  @ApiModelProperty(value = "")
+  public StringBooleanMap getIndirectMap() {
+    return indirectMap;
+  }
+
+  public void setIndirectMap(StringBooleanMap indirectMap) {
+    this.indirectMap = indirectMap;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    MapTest mapTest = (MapTest) o;
+    return Objects.equals(this.mapMapOfString, mapTest.mapMapOfString) &&
+        Objects.equals(this.mapOfEnumString, mapTest.mapOfEnumString) &&
+        Objects.equals(this.directMap, mapTest.directMap) &&
+        Objects.equals(this.indirectMap, mapTest.indirectMap);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(mapMapOfString, mapOfEnumString, directMap, indirectMap);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class MapTest {\n");
+    
+    sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
+    sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
+    sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
+    sb.append("    indirectMap: ").append(toIndentedString(indirectMap)).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/webclient/src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java

@@ -0,0 +1,151 @@
+/*
+ * 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.time.OffsetDateTime;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
+import org.openapitools.client.model.Animal;
+
+/**
+ * MixedPropertiesAndAdditionalPropertiesClass
+ */
+
+public class MixedPropertiesAndAdditionalPropertiesClass {
+  @JsonProperty("uuid")
+  private UUID uuid = null;
+
+  @JsonProperty("dateTime")
+  private OffsetDateTime dateTime = null;
+
+  @JsonProperty("map")
+  private Map<String, Animal> map = null;
+
+  public MixedPropertiesAndAdditionalPropertiesClass uuid(UUID uuid) {
+    this.uuid = uuid;
+    return this;
+  }
+
+   /**
+   * Get uuid
+   * @return uuid
+  **/
+  @ApiModelProperty(value = "")
+  public UUID getUuid() {
+    return uuid;
+  }
+
+  public void setUuid(UUID uuid) {
+    this.uuid = uuid;
+  }
+
+  public MixedPropertiesAndAdditionalPropertiesClass dateTime(OffsetDateTime dateTime) {
+    this.dateTime = dateTime;
+    return this;
+  }
+
+   /**
+   * Get dateTime
+   * @return dateTime
+  **/
+  @ApiModelProperty(value = "")
+  public OffsetDateTime getDateTime() {
+    return dateTime;
+  }
+
+  public void setDateTime(OffsetDateTime dateTime) {
+    this.dateTime = dateTime;
+  }
+
+  public MixedPropertiesAndAdditionalPropertiesClass map(Map<String, Animal> map) {
+    this.map = map;
+    return this;
+  }
+
+  public MixedPropertiesAndAdditionalPropertiesClass putMapItem(String key, Animal mapItem) {
+    if (this.map == null) {
+      this.map = new HashMap<>();
+    }
+    this.map.put(key, mapItem);
+    return this;
+  }
+
+   /**
+   * Get map
+   * @return map
+  **/
+  @ApiModelProperty(value = "")
+  public Map<String, Animal> getMap() {
+    return map;
+  }
+
+  public void setMap(Map<String, Animal> map) {
+    this.map = map;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    MixedPropertiesAndAdditionalPropertiesClass mixedPropertiesAndAdditionalPropertiesClass = (MixedPropertiesAndAdditionalPropertiesClass) o;
+    return Objects.equals(this.uuid, mixedPropertiesAndAdditionalPropertiesClass.uuid) &&
+        Objects.equals(this.dateTime, mixedPropertiesAndAdditionalPropertiesClass.dateTime) &&
+        Objects.equals(this.map, mixedPropertiesAndAdditionalPropertiesClass.map);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(uuid, dateTime, map);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
+    
+    sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
+    sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
+    sb.append("    map: ").append(toIndentedString(map)).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/webclient/src/main/java/org/openapitools/client/model/Model200Response.java

@@ -0,0 +1,115 @@
+/*
+ * 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;
+
+/**
+ * Model for testing model name starting with number
+ */
+@ApiModel(description = "Model for testing model name starting with number")
+
+public class Model200Response {
+  @JsonProperty("name")
+  private Integer name = null;
+
+  @JsonProperty("class")
+  private String propertyClass = null;
+
+  public Model200Response name(Integer name) {
+    this.name = name;
+    return this;
+  }
+
+   /**
+   * Get name
+   * @return name
+  **/
+  @ApiModelProperty(value = "")
+  public Integer getName() {
+    return name;
+  }
+
+  public void setName(Integer name) {
+    this.name = name;
+  }
+
+  public Model200Response propertyClass(String propertyClass) {
+    this.propertyClass = propertyClass;
+    return this;
+  }
+
+   /**
+   * Get propertyClass
+   * @return propertyClass
+  **/
+  @ApiModelProperty(value = "")
+  public String getPropertyClass() {
+    return propertyClass;
+  }
+
+  public void setPropertyClass(String propertyClass) {
+    this.propertyClass = propertyClass;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Model200Response _200response = (Model200Response) o;
+    return Objects.equals(this.name, _200response.name) &&
+        Objects.equals(this.propertyClass, _200response.propertyClass);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(name, propertyClass);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Model200Response {\n");
+    
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).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/webclient/src/main/java/org/openapitools/client/model/ModelApiResponse.java

@@ -0,0 +1,137 @@
+/*
+ * 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;
+
+/**
+ * ModelApiResponse
+ */
+
+public class ModelApiResponse {
+  @JsonProperty("code")
+  private Integer code = null;
+
+  @JsonProperty("type")
+  private String type = null;
+
+  @JsonProperty("message")
+  private String message = null;
+
+  public ModelApiResponse code(Integer code) {
+    this.code = code;
+    return this;
+  }
+
+   /**
+   * Get code
+   * @return code
+  **/
+  @ApiModelProperty(value = "")
+  public Integer getCode() {
+    return code;
+  }
+
+  public void setCode(Integer code) {
+    this.code = code;
+  }
+
+  public ModelApiResponse type(String type) {
+    this.type = type;
+    return this;
+  }
+
+   /**
+   * Get type
+   * @return type
+  **/
+  @ApiModelProperty(value = "")
+  public String getType() {
+    return type;
+  }
+
+  public void setType(String type) {
+    this.type = type;
+  }
+
+  public ModelApiResponse message(String message) {
+    this.message = message;
+    return this;
+  }
+
+   /**
+   * Get message
+   * @return message
+  **/
+  @ApiModelProperty(value = "")
+  public String getMessage() {
+    return message;
+  }
+
+  public void setMessage(String message) {
+    this.message = message;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelApiResponse _apiResponse = (ModelApiResponse) o;
+    return Objects.equals(this.code, _apiResponse.code) &&
+        Objects.equals(this.type, _apiResponse.type) &&
+        Objects.equals(this.message, _apiResponse.message);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(code, type, message);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelApiResponse {\n");
+    
+    sb.append("    code: ").append(toIndentedString(code)).append("\n");
+    sb.append("    type: ").append(toIndentedString(type)).append("\n");
+    sb.append("    message: ").append(toIndentedString(message)).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/webclient/src/main/java/org/openapitools/client/model/ModelReturn.java

@@ -0,0 +1,92 @@
+/*
+ * 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;
+
+/**
+ * Model for testing reserved words
+ */
+@ApiModel(description = "Model for testing reserved words")
+
+public class ModelReturn {
+  @JsonProperty("return")
+  private Integer _return = null;
+
+  public ModelReturn _return(Integer _return) {
+    this._return = _return;
+    return this;
+  }
+
+   /**
+   * Get _return
+   * @return _return
+  **/
+  @ApiModelProperty(value = "")
+  public Integer getReturn() {
+    return _return;
+  }
+
+  public void setReturn(Integer _return) {
+    this._return = _return;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelReturn _return = (ModelReturn) o;
+    return Objects.equals(this._return, _return._return);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_return);
+  }
+
+
+  @Override
+  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();
+  }
+
+  /**
+   * 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/webclient/src/main/java/org/openapitools/client/model/Name.java

@@ -0,0 +1,143 @@
+/*
+ * 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;
+
+/**
+ * Model for testing model name same as property name
+ */
+@ApiModel(description = "Model for testing model name same as property name")
+
+public class Name {
+  @JsonProperty("name")
+  private Integer name = null;
+
+  @JsonProperty("snake_case")
+  private Integer snakeCase = null;
+
+  @JsonProperty("property")
+  private String property = null;
+
+  @JsonProperty("123Number")
+  private Integer _123number = null;
+
+  public Name name(Integer name) {
+    this.name = name;
+    return this;
+  }
+
+   /**
+   * Get name
+   * @return name
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Integer getName() {
+    return name;
+  }
+
+  public void setName(Integer name) {
+    this.name = name;
+  }
+
+   /**
+   * Get snakeCase
+   * @return snakeCase
+  **/
+  @ApiModelProperty(value = "")
+  public Integer getSnakeCase() {
+    return snakeCase;
+  }
+
+  public Name property(String property) {
+    this.property = property;
+    return this;
+  }
+
+   /**
+   * Get property
+   * @return property
+  **/
+  @ApiModelProperty(value = "")
+  public String getProperty() {
+    return property;
+  }
+
+  public void setProperty(String property) {
+    this.property = property;
+  }
+
+   /**
+   * Get _123number
+   * @return _123number
+  **/
+  @ApiModelProperty(value = "")
+  public Integer get123number() {
+    return _123number;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Name name = (Name) o;
+    return Objects.equals(this.name, name.name) &&
+        Objects.equals(this.snakeCase, name.snakeCase) &&
+        Objects.equals(this.property, name.property) &&
+        Objects.equals(this._123number, name._123number);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(name, snakeCase, property, _123number);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Name {\n");
+    
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
+    sb.append("    property: ").append(toIndentedString(property)).append("\n");
+    sb.append("    _123number: ").append(toIndentedString(_123number)).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/webclient/src/main/java/org/openapitools/client/model/NumberOnly.java

@@ -0,0 +1,92 @@
+/*
+ * 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;
+
+/**
+ * NumberOnly
+ */
+
+public class NumberOnly {
+  @JsonProperty("JustNumber")
+  private BigDecimal justNumber = null;
+
+  public NumberOnly justNumber(BigDecimal justNumber) {
+    this.justNumber = justNumber;
+    return this;
+  }
+
+   /**
+   * Get justNumber
+   * @return justNumber
+  **/
+  @ApiModelProperty(value = "")
+  public BigDecimal getJustNumber() {
+    return justNumber;
+  }
+
+  public void setJustNumber(BigDecimal justNumber) {
+    this.justNumber = justNumber;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    NumberOnly numberOnly = (NumberOnly) o;
+    return Objects.equals(this.justNumber, numberOnly.justNumber);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(justNumber);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class NumberOnly {\n");
+    
+    sb.append("    justNumber: ").append(toIndentedString(justNumber)).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/webclient/src/main/java/org/openapitools/client/model/Order.java

@@ -0,0 +1,244 @@
+/*
+ * 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.time.OffsetDateTime;
+
+/**
+ * Order
+ */
+
+public class Order {
+  @JsonProperty("id")
+  private Long id = null;
+
+  @JsonProperty("petId")
+  private Long petId = null;
+
+  @JsonProperty("quantity")
+  private Integer quantity = null;
+
+  @JsonProperty("shipDate")
+  private OffsetDateTime shipDate = null;
+
+  /**
+   * Order Status
+   */
+  public enum StatusEnum {
+    PLACED("placed"),
+    
+    APPROVED("approved"),
+    
+    DELIVERED("delivered");
+
+    private String value;
+
+    StatusEnum(String value) {
+      this.value = value;
+    }
+
+    @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
+    public String toString() {
+      return String.valueOf(value);
+    }
+
+    @JsonCreator
+    public static StatusEnum fromValue(String text) {
+      for (StatusEnum b : StatusEnum.values()) {
+        if (String.valueOf(b.value).equals(text)) {
+          return b;
+        }
+      }
+      return null;
+    }
+  }
+
+  @JsonProperty("status")
+  private StatusEnum status = null;
+
+  @JsonProperty("complete")
+  private Boolean complete = false;
+
+  public Order 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 Order petId(Long petId) {
+    this.petId = petId;
+    return this;
+  }
+
+   /**
+   * Get petId
+   * @return petId
+  **/
+  @ApiModelProperty(value = "")
+  public Long getPetId() {
+    return petId;
+  }
+
+  public void setPetId(Long petId) {
+    this.petId = petId;
+  }
+
+  public Order quantity(Integer quantity) {
+    this.quantity = quantity;
+    return this;
+  }
+
+   /**
+   * Get quantity
+   * @return quantity
+  **/
+  @ApiModelProperty(value = "")
+  public Integer getQuantity() {
+    return quantity;
+  }
+
+  public void setQuantity(Integer quantity) {
+    this.quantity = quantity;
+  }
+
+  public Order shipDate(OffsetDateTime shipDate) {
+    this.shipDate = shipDate;
+    return this;
+  }
+
+   /**
+   * Get shipDate
+   * @return shipDate
+  **/
+  @ApiModelProperty(value = "")
+  public OffsetDateTime getShipDate() {
+    return shipDate;
+  }
+
+  public void setShipDate(OffsetDateTime shipDate) {
+    this.shipDate = shipDate;
+  }
+
+  public Order status(StatusEnum status) {
+    this.status = status;
+    return this;
+  }
+
+   /**
+   * Order Status
+   * @return status
+  **/
+  @ApiModelProperty(value = "Order Status")
+  public StatusEnum getStatus() {
+    return status;
+  }
+
+  public void setStatus(StatusEnum status) {
+    this.status = status;
+  }
+
+  public Order complete(Boolean complete) {
+    this.complete = complete;
+    return this;
+  }
+
+   /**
+   * Get complete
+   * @return complete
+  **/
+  @ApiModelProperty(value = "")
+  public Boolean isComplete() {
+    return complete;
+  }
+
+  public void setComplete(Boolean complete) {
+    this.complete = complete;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Order order = (Order) o;
+    return Objects.equals(this.id, order.id) &&
+        Objects.equals(this.petId, order.petId) &&
+        Objects.equals(this.quantity, order.quantity) &&
+        Objects.equals(this.shipDate, order.shipDate) &&
+        Objects.equals(this.status, order.status) &&
+        Objects.equals(this.complete, order.complete);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, petId, quantity, shipDate, status, complete);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Order {\n");
+    
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
+    sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
+    sb.append("    shipDate: ").append(toIndentedString(shipDate)).append("\n");
+    sb.append("    status: ").append(toIndentedString(status)).append("\n");
+    sb.append("    complete: ").append(toIndentedString(complete)).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/webclient/src/main/java/org/openapitools/client/model/OuterComposite.java

@@ -0,0 +1,138 @@
+/*
+ * 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;
+
+/**
+ * OuterComposite
+ */
+
+public class OuterComposite {
+  @JsonProperty("my_number")
+  private BigDecimal myNumber = null;
+
+  @JsonProperty("my_string")
+  private String myString = null;
+
+  @JsonProperty("my_boolean")
+  private Boolean myBoolean = null;
+
+  public OuterComposite myNumber(BigDecimal myNumber) {
+    this.myNumber = myNumber;
+    return this;
+  }
+
+   /**
+   * Get myNumber
+   * @return myNumber
+  **/
+  @ApiModelProperty(value = "")
+  public BigDecimal getMyNumber() {
+    return myNumber;
+  }
+
+  public void setMyNumber(BigDecimal myNumber) {
+    this.myNumber = myNumber;
+  }
+
+  public OuterComposite myString(String myString) {
+    this.myString = myString;
+    return this;
+  }
+
+   /**
+   * Get myString
+   * @return myString
+  **/
+  @ApiModelProperty(value = "")
+  public String getMyString() {
+    return myString;
+  }
+
+  public void setMyString(String myString) {
+    this.myString = myString;
+  }
+
+  public OuterComposite myBoolean(Boolean myBoolean) {
+    this.myBoolean = myBoolean;
+    return this;
+  }
+
+   /**
+   * Get myBoolean
+   * @return myBoolean
+  **/
+  @ApiModelProperty(value = "")
+  public Boolean isMyBoolean() {
+    return myBoolean;
+  }
+
+  public void setMyBoolean(Boolean myBoolean) {
+    this.myBoolean = myBoolean;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    OuterComposite outerComposite = (OuterComposite) o;
+    return Objects.equals(this.myNumber, outerComposite.myNumber) &&
+        Objects.equals(this.myString, outerComposite.myString) &&
+        Objects.equals(this.myBoolean, outerComposite.myBoolean);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(myNumber, myString, myBoolean);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class OuterComposite {\n");
+    
+    sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
+    sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
+    sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).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/webclient/src/main/java/org/openapitools/client/model/OuterEnum.java

@@ -0,0 +1,59 @@
+/*
+ * 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.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+
+/**
+ * Gets or Sets OuterEnum
+ */
+public enum OuterEnum {
+  
+  PLACED("placed"),
+  
+  APPROVED("approved"),
+  
+  DELIVERED("delivered");
+
+  private String value;
+
+  OuterEnum(String value) {
+    this.value = value;
+  }
+
+  @JsonValue
+  public String getValue() {
+    return value;
+  }
+
+  @Override
+  public String toString() {
+    return String.valueOf(value);
+  }
+
+  @JsonCreator
+  public static OuterEnum fromValue(String text) {
+    for (OuterEnum b : OuterEnum.values()) {
+      if (String.valueOf(b.value).equals(text)) {
+        return b;
+      }
+    }
+    return null;
+  }
+}
+

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/model/Pet.java

@@ -0,0 +1,260 @@
+/*
+ * 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.Category;
+import org.openapitools.client.model.Tag;
+
+/**
+ * Pet
+ */
+
+public class Pet {
+  @JsonProperty("id")
+  private Long id = null;
+
+  @JsonProperty("category")
+  private Category category = null;
+
+  @JsonProperty("name")
+  private String name = null;
+
+  @JsonProperty("photoUrls")
+  private List<String> photoUrls = new ArrayList<>();
+
+  @JsonProperty("tags")
+  private List<Tag> tags = null;
+
+  /**
+   * pet status in the store
+   */
+  public enum StatusEnum {
+    AVAILABLE("available"),
+    
+    PENDING("pending"),
+    
+    SOLD("sold");
+
+    private String value;
+
+    StatusEnum(String value) {
+      this.value = value;
+    }
+
+    @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
+    public String toString() {
+      return String.valueOf(value);
+    }
+
+    @JsonCreator
+    public static StatusEnum fromValue(String text) {
+      for (StatusEnum b : StatusEnum.values()) {
+        if (String.valueOf(b.value).equals(text)) {
+          return b;
+        }
+      }
+      return null;
+    }
+  }
+
+  @JsonProperty("status")
+  private StatusEnum status = null;
+
+  public Pet 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 Pet category(Category category) {
+    this.category = category;
+    return this;
+  }
+
+   /**
+   * Get category
+   * @return category
+  **/
+  @ApiModelProperty(value = "")
+  public Category getCategory() {
+    return category;
+  }
+
+  public void setCategory(Category category) {
+    this.category = category;
+  }
+
+  public Pet name(String name) {
+    this.name = name;
+    return this;
+  }
+
+   /**
+   * Get name
+   * @return name
+  **/
+  @ApiModelProperty(example = "doggie", required = true, value = "")
+  public String getName() {
+    return name;
+  }
+
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  public Pet photoUrls(List<String> photoUrls) {
+    this.photoUrls = photoUrls;
+    return this;
+  }
+
+  public Pet addPhotoUrlsItem(String photoUrlsItem) {
+    this.photoUrls.add(photoUrlsItem);
+    return this;
+  }
+
+   /**
+   * Get photoUrls
+   * @return photoUrls
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public List<String> getPhotoUrls() {
+    return photoUrls;
+  }
+
+  public void setPhotoUrls(List<String> photoUrls) {
+    this.photoUrls = photoUrls;
+  }
+
+  public Pet tags(List<Tag> tags) {
+    this.tags = tags;
+    return this;
+  }
+
+  public Pet addTagsItem(Tag tagsItem) {
+    if (this.tags == null) {
+      this.tags = new ArrayList<>();
+    }
+    this.tags.add(tagsItem);
+    return this;
+  }
+
+   /**
+   * Get tags
+   * @return tags
+  **/
+  @ApiModelProperty(value = "")
+  public List<Tag> getTags() {
+    return tags;
+  }
+
+  public void setTags(List<Tag> tags) {
+    this.tags = tags;
+  }
+
+  public Pet status(StatusEnum status) {
+    this.status = status;
+    return this;
+  }
+
+   /**
+   * pet status in the store
+   * @return status
+  **/
+  @ApiModelProperty(value = "pet status in the store")
+  public StatusEnum getStatus() {
+    return status;
+  }
+
+  public void setStatus(StatusEnum status) {
+    this.status = status;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Pet pet = (Pet) o;
+    return Objects.equals(this.id, pet.id) &&
+        Objects.equals(this.category, pet.category) &&
+        Objects.equals(this.name, pet.name) &&
+        Objects.equals(this.photoUrls, pet.photoUrls) &&
+        Objects.equals(this.tags, pet.tags) &&
+        Objects.equals(this.status, pet.status);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, category, name, photoUrls, tags, status);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Pet {\n");
+    
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    category: ").append(toIndentedString(category)).append("\n");
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("    photoUrls: ").append(toIndentedString(photoUrls)).append("\n");
+    sb.append("    tags: ").append(toIndentedString(tags)).append("\n");
+    sb.append("    status: ").append(toIndentedString(status)).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/webclient/src/main/java/org/openapitools/client/model/ReadOnlyFirst.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;
+
+/**
+ * ReadOnlyFirst
+ */
+
+public class ReadOnlyFirst {
+  @JsonProperty("bar")
+  private String bar = null;
+
+  @JsonProperty("baz")
+  private String baz = null;
+
+   /**
+   * Get bar
+   * @return bar
+  **/
+  @ApiModelProperty(value = "")
+  public String getBar() {
+    return bar;
+  }
+
+  public ReadOnlyFirst baz(String baz) {
+    this.baz = baz;
+    return this;
+  }
+
+   /**
+   * Get baz
+   * @return baz
+  **/
+  @ApiModelProperty(value = "")
+  public String getBaz() {
+    return baz;
+  }
+
+  public void setBaz(String baz) {
+    this.baz = baz;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ReadOnlyFirst readOnlyFirst = (ReadOnlyFirst) o;
+    return Objects.equals(this.bar, readOnlyFirst.bar) &&
+        Objects.equals(this.baz, readOnlyFirst.baz);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(bar, baz);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ReadOnlyFirst {\n");
+    
+    sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
+    sb.append("    baz: ").append(toIndentedString(baz)).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/webclient/src/main/java/org/openapitools/client/model/SpecialModelName.java

@@ -0,0 +1,91 @@
+/*
+ * 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;
+
+/**
+ * SpecialModelName
+ */
+
+public class SpecialModelName {
+  @JsonProperty("$special[property.name]")
+  private Long $specialPropertyName = null;
+
+  public SpecialModelName $specialPropertyName(Long $specialPropertyName) {
+    this.$specialPropertyName = $specialPropertyName;
+    return this;
+  }
+
+   /**
+   * Get $specialPropertyName
+   * @return $specialPropertyName
+  **/
+  @ApiModelProperty(value = "")
+  public Long get$SpecialPropertyName() {
+    return $specialPropertyName;
+  }
+
+  public void set$SpecialPropertyName(Long $specialPropertyName) {
+    this.$specialPropertyName = $specialPropertyName;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    SpecialModelName $specialModelName = (SpecialModelName) o;
+    return Objects.equals(this.$specialPropertyName, $specialModelName.$specialPropertyName);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash($specialPropertyName);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class SpecialModelName {\n");
+    
+    sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).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/webclient/src/main/java/org/openapitools/client/model/StringBooleanMap.java

@@ -0,0 +1,65 @@
+/*
+ * 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.HashMap;
+import java.util.Map;
+
+/**
+ * StringBooleanMap
+ */
+
+public class StringBooleanMap extends HashMap<String, Boolean> {
+
+  @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 StringBooleanMap {\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/webclient/src/main/java/org/openapitools/client/model/Tag.java

@@ -0,0 +1,114 @@
+/*
+ * 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;
+
+/**
+ * Tag
+ */
+
+public class Tag {
+  @JsonProperty("id")
+  private Long id = null;
+
+  @JsonProperty("name")
+  private String name = null;
+
+  public Tag 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 Tag 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;
+    }
+    Tag tag = (Tag) o;
+    return Objects.equals(this.id, tag.id) &&
+        Objects.equals(this.name, tag.name);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, name);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Tag {\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    ");
+  }
+
+}
+

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/model/User.java

@@ -0,0 +1,252 @@
+/*
+ * 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;
+
+/**
+ * User
+ */
+
+public class User {
+  @JsonProperty("id")
+  private Long id = null;
+
+  @JsonProperty("username")
+  private String username = null;
+
+  @JsonProperty("firstName")
+  private String firstName = null;
+
+  @JsonProperty("lastName")
+  private String lastName = null;
+
+  @JsonProperty("email")
+  private String email = null;
+
+  @JsonProperty("password")
+  private String password = null;
+
+  @JsonProperty("phone")
+  private String phone = null;
+
+  @JsonProperty("userStatus")
+  private Integer userStatus = null;
+
+  public User 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 User username(String username) {
+    this.username = username;
+    return this;
+  }
+
+   /**
+   * Get username
+   * @return username
+  **/
+  @ApiModelProperty(value = "")
+  public String getUsername() {
+    return username;
+  }
+
+  public void setUsername(String username) {
+    this.username = username;
+  }
+
+  public User firstName(String firstName) {
+    this.firstName = firstName;
+    return this;
+  }
+
+   /**
+   * Get firstName
+   * @return firstName
+  **/
+  @ApiModelProperty(value = "")
+  public String getFirstName() {
+    return firstName;
+  }
+
+  public void setFirstName(String firstName) {
+    this.firstName = firstName;
+  }
+
+  public User lastName(String lastName) {
+    this.lastName = lastName;
+    return this;
+  }
+
+   /**
+   * Get lastName
+   * @return lastName
+  **/
+  @ApiModelProperty(value = "")
+  public String getLastName() {
+    return lastName;
+  }
+
+  public void setLastName(String lastName) {
+    this.lastName = lastName;
+  }
+
+  public User email(String email) {
+    this.email = email;
+    return this;
+  }
+
+   /**
+   * Get email
+   * @return email
+  **/
+  @ApiModelProperty(value = "")
+  public String getEmail() {
+    return email;
+  }
+
+  public void setEmail(String email) {
+    this.email = email;
+  }
+
+  public User password(String password) {
+    this.password = password;
+    return this;
+  }
+
+   /**
+   * Get password
+   * @return password
+  **/
+  @ApiModelProperty(value = "")
+  public String getPassword() {
+    return password;
+  }
+
+  public void setPassword(String password) {
+    this.password = password;
+  }
+
+  public User phone(String phone) {
+    this.phone = phone;
+    return this;
+  }
+
+   /**
+   * Get phone
+   * @return phone
+  **/
+  @ApiModelProperty(value = "")
+  public String getPhone() {
+    return phone;
+  }
+
+  public void setPhone(String phone) {
+    this.phone = phone;
+  }
+
+  public User userStatus(Integer userStatus) {
+    this.userStatus = userStatus;
+    return this;
+  }
+
+   /**
+   * User Status
+   * @return userStatus
+  **/
+  @ApiModelProperty(value = "User Status")
+  public Integer getUserStatus() {
+    return userStatus;
+  }
+
+  public void setUserStatus(Integer userStatus) {
+    this.userStatus = userStatus;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    User user = (User) o;
+    return Objects.equals(this.id, user.id) &&
+        Objects.equals(this.username, user.username) &&
+        Objects.equals(this.firstName, user.firstName) &&
+        Objects.equals(this.lastName, user.lastName) &&
+        Objects.equals(this.email, user.email) &&
+        Objects.equals(this.password, user.password) &&
+        Objects.equals(this.phone, user.phone) &&
+        Objects.equals(this.userStatus, user.userStatus);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, username, firstName, lastName, email, password, phone, userStatus);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class User {\n");
+    
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    username: ").append(toIndentedString(username)).append("\n");
+    sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
+    sb.append("    lastName: ").append(toIndentedString(lastName)).append("\n");
+    sb.append("    email: ").append(toIndentedString(email)).append("\n");
+    sb.append("    password: ").append(toIndentedString(password)).append("\n");
+    sb.append("    phone: ").append(toIndentedString(phone)).append("\n");
+    sb.append("    userStatus: ").append(toIndentedString(userStatus)).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/webclient/src/test/java/org/openapitools/client/api/AnotherFakeApiTest.java

@@ -0,0 +1,51 @@
+/*
+ * 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.api;
+
+import org.openapitools.client.ApiException;
+import org.openapitools.client.model.Client;
+import org.junit.Test;
+import org.junit.Ignore;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * API tests for AnotherFakeApi
+ */
+@Ignore
+public class AnotherFakeApiTest {
+
+    private final AnotherFakeApi api = new AnotherFakeApi();
+
+    
+    /**
+     * To test special tags
+     *
+     * To test special tags
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testSpecialTagsTest() throws ApiException {
+        Client client = null;
+        Client response = api.testSpecialTags(client).block();
+
+        // TODO: test validations
+    }
+    
+}

samples/client/petstore/java/webclient/src/test/java/org/openapitools/client/api/FakeApiTest.java

@@ -0,0 +1,223 @@
+/*
+ * 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.api;
+
+import org.openapitools.client.ApiException;
+import java.math.BigDecimal;
+import org.openapitools.client.model.Client;
+import java.io.File;
+import java.time.LocalDate;
+import java.time.OffsetDateTime;
+import org.openapitools.client.model.OuterComposite;
+import org.openapitools.client.model.User;
+import org.junit.Test;
+import org.junit.Ignore;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * API tests for FakeApi
+ */
+@Ignore
+public class FakeApiTest {
+
+    private final FakeApi api = new FakeApi();
+
+    
+    /**
+     * 
+     *
+     * Test serialization of outer boolean types
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeOuterBooleanSerializeTest() throws ApiException {
+        Boolean body = null;
+        Boolean response = api.fakeOuterBooleanSerialize(body).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * 
+     *
+     * Test serialization of object with outer number type
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeOuterCompositeSerializeTest() throws ApiException {
+        OuterComposite outerComposite = null;
+        OuterComposite response = api.fakeOuterCompositeSerialize(outerComposite).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * 
+     *
+     * Test serialization of outer number types
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeOuterNumberSerializeTest() throws ApiException {
+        BigDecimal body = null;
+        BigDecimal response = api.fakeOuterNumberSerialize(body).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * 
+     *
+     * Test serialization of outer string types
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void fakeOuterStringSerializeTest() throws ApiException {
+        String body = null;
+        String response = api.fakeOuterStringSerialize(body).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * 
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testBodyWithQueryParamsTest() throws ApiException {
+        String query = null;
+        User user = null;
+        api.testBodyWithQueryParams(query, user).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * To test \"client\" model
+     *
+     * To test \"client\" model
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testClientModelTest() throws ApiException {
+        Client client = null;
+        Client response = api.testClientModel(client).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * 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 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testEndpointParametersTest() throws ApiException {
+        BigDecimal number = null;
+        Double _double = null;
+        String patternWithoutDelimiter = null;
+        byte[] _byte = null;
+        Integer integer = null;
+        Integer int32 = null;
+        Long int64 = null;
+        Float _float = null;
+        String string = null;
+        File binary = null;
+        LocalDate date = null;
+        OffsetDateTime dateTime = null;
+        String password = null;
+        String paramCallback = null;
+        api.testEndpointParameters(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * To test enum parameters
+     *
+     * To test enum parameters
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testEnumParametersTest() throws ApiException {
+        List<String> enumHeaderStringArray = null;
+        String enumHeaderString = null;
+        List<String> enumQueryStringArray = null;
+        String enumQueryString = null;
+        Integer enumQueryInteger = null;
+        Double enumQueryDouble = null;
+        List<String> enumFormStringArray = null;
+        String enumFormString = null;
+        api.testEnumParameters(enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble, enumFormStringArray, enumFormString).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * test inline additionalProperties
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testInlineAdditionalPropertiesTest() throws ApiException {
+        Map<String, String> requestBody = null;
+        api.testInlineAdditionalProperties(requestBody).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * test json serialization of form data
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testJsonFormDataTest() throws ApiException {
+        String param = null;
+        String param2 = null;
+        api.testJsonFormData(param, param2).block();
+
+        // TODO: test validations
+    }
+    
+}

samples/client/petstore/java/webclient/src/test/java/org/openapitools/client/api/FakeClassnameTags123ApiTest.java

@@ -0,0 +1,51 @@
+/*
+ * 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.api;
+
+import org.openapitools.client.ApiException;
+import org.openapitools.client.model.Client;
+import org.junit.Test;
+import org.junit.Ignore;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * API tests for FakeClassnameTags123Api
+ */
+@Ignore
+public class FakeClassnameTags123ApiTest {
+
+    private final FakeClassnameTags123Api api = new FakeClassnameTags123Api();
+
+    
+    /**
+     * To test class name in snake case
+     *
+     * To test class name in snake case
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testClassnameTest() throws ApiException {
+        Client client = null;
+        Client response = api.testClassname(client).block();
+
+        // TODO: test validations
+    }
+    
+}

samples/client/petstore/java/webclient/src/test/java/org/openapitools/client/api/PetApiTest.java

@@ -0,0 +1,188 @@
+/*
+ * 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.api;
+
+import org.openapitools.client.ApiException;
+import java.io.File;
+import org.openapitools.client.model.ModelApiResponse;
+import org.openapitools.client.model.Pet;
+import org.junit.Test;
+import org.junit.Ignore;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * API tests for PetApi
+ */
+@Ignore
+public class PetApiTest {
+
+    private final PetApi api = new PetApi();
+
+    
+    /**
+     * Add a new pet to the store
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void addPetTest() throws ApiException {
+        Pet pet = null;
+        api.addPet(pet).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * Deletes a pet
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void deletePetTest() throws ApiException {
+        Long petId = null;
+        String apiKey = null;
+        api.deletePet(petId, apiKey).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * Finds Pets by status
+     *
+     * Multiple status values can be provided with comma separated strings
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void findPetsByStatusTest() throws ApiException {
+        List<String> status = null;
+        List<Pet> response = api.findPetsByStatus(status).collectList().block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * Finds Pets by tags
+     *
+     * Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void findPetsByTagsTest() throws ApiException {
+        List<String> tags = null;
+        List<Pet> response = api.findPetsByTags(tags).collectList().block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * Find pet by ID
+     *
+     * Returns a single pet
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void getPetByIdTest() throws ApiException {
+        Long petId = null;
+        Pet response = api.getPetById(petId).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * Update an existing pet
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void updatePetTest() throws ApiException {
+        Pet pet = null;
+        api.updatePet(pet).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * Updates a pet in the store with form data
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void updatePetWithFormTest() throws ApiException {
+        Long petId = null;
+        String name = null;
+        String status = null;
+        api.updatePetWithForm(petId, name, status).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * uploads an image
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void uploadFileTest() throws ApiException {
+        Long petId = null;
+        String additionalMetadata = null;
+        File file = null;
+        ModelApiResponse response = api.uploadFile(petId, additionalMetadata, file).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * uploads an image (required)
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void uploadFileWithRequiredFileTest() throws ApiException {
+        Long petId = null;
+        File file = null;
+        String additionalMetadata = null;
+        ModelApiResponse response = api.uploadFileWithRequiredFile(petId, file, additionalMetadata).block();
+
+        // TODO: test validations
+    }
+    
+}

samples/client/petstore/java/webclient/src/test/java/org/openapitools/client/api/StoreApiTest.java

@@ -0,0 +1,98 @@
+/*
+ * 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.api;
+
+import org.openapitools.client.ApiException;
+import org.openapitools.client.model.Order;
+import org.junit.Test;
+import org.junit.Ignore;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * API tests for StoreApi
+ */
+@Ignore
+public class StoreApiTest {
+
+    private final StoreApi api = new StoreApi();
+
+    
+    /**
+     * Delete purchase order by ID
+     *
+     * For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void deleteOrderTest() throws ApiException {
+        String orderId = null;
+        api.deleteOrder(orderId).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * Returns pet inventories by status
+     *
+     * Returns a map of status codes to quantities
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void getInventoryTest() throws ApiException {
+        Map<String, Integer> response = api.getInventory().block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * Find purchase order by ID
+     *
+     * For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void getOrderByIdTest() throws ApiException {
+        Long orderId = null;
+        Order response = api.getOrderById(orderId).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * Place an order for a pet
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void placeOrderTest() throws ApiException {
+        Order order = null;
+        Order response = api.placeOrder(order).block();
+
+        // TODO: test validations
+    }
+    
+}

samples/client/petstore/java/webclient/src/test/java/org/openapitools/client/api/UserApiTest.java

@@ -0,0 +1,164 @@
+/*
+ * 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.api;
+
+import org.openapitools.client.ApiException;
+import org.openapitools.client.model.User;
+import org.junit.Test;
+import org.junit.Ignore;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * API tests for UserApi
+ */
+@Ignore
+public class UserApiTest {
+
+    private final UserApi api = new UserApi();
+
+    
+    /**
+     * Create user
+     *
+     * This can only be done by the logged in user.
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void createUserTest() throws ApiException {
+        User user = null;
+        api.createUser(user).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * Creates list of users with given input array
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void createUsersWithArrayInputTest() throws ApiException {
+        List<User> user = null;
+        api.createUsersWithArrayInput(user).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * Creates list of users with given input array
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void createUsersWithListInputTest() throws ApiException {
+        List<User> user = null;
+        api.createUsersWithListInput(user).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * Delete user
+     *
+     * This can only be done by the logged in user.
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void deleteUserTest() throws ApiException {
+        String username = null;
+        api.deleteUser(username).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * Get user by user name
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void getUserByNameTest() throws ApiException {
+        String username = null;
+        User response = api.getUserByName(username).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * Logs user into the system
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void loginUserTest() throws ApiException {
+        String username = null;
+        String password = null;
+        String response = api.loginUser(username, password).block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * Logs out current logged in user session
+     *
+     * 
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void logoutUserTest() throws ApiException {
+        api.logoutUser().block();
+
+        // TODO: test validations
+    }
+    
+    /**
+     * Updated user
+     *
+     * This can only be done by the logged in user.
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void updateUserTest() throws ApiException {
+        String username = null;
+        User user = null;
+        api.updateUser(username, user).block();
+
+        // TODO: test validations
+    }
+    
+}