fix enum name in okhttp-gson-nextgen (#11210)

Author: wing328

modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson-nextgen/ApiClient.mustache

@@ -197,7 +197,7 @@ public class ApiClient {
                 throw new IllegalArgumentException("OAuth2 token URL must be an absolute URL");
             }
         }
-        RetryingOAuth retryingOAuth = new RetryingOAuth(tokenUrl, clientId, OAuthFlow.{{flow}}, clientSecret, parameters);
+        RetryingOAuth retryingOAuth = new RetryingOAuth(tokenUrl, clientId, OAuthFlow.{{#lambda.uppercase}}{{#lambda.snakecase}}{{flow}}{{/lambda.snakecase}}{{/lambda.uppercase}}, clientSecret, parameters);
         authentications.put(
                 "{{name}}",
                 retryingOAuth

modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson-nextgen/auth/RetryingOAuth.mustache

@@ -65,16 +65,16 @@ public class RetryingOAuth extends OAuth implements Interceptor {
 
     public void setFlow(OAuthFlow flow) {
         switch(flow) {
-            case accessCode:
+            case ACCESS_CODE:
                 tokenRequestBuilder.setGrantType(GrantType.AUTHORIZATION_CODE);
                 break;
-            case implicit:
+            case IMPLICIT:
                 tokenRequestBuilder.setGrantType(GrantType.IMPLICIT);
                 break;
-            case password:
+            case PASSWORD:
                 tokenRequestBuilder.setGrantType(GrantType.PASSWORD);
                 break;
-            case application:
+            case APPLICATION:
                 tokenRequestBuilder.setGrantType(GrantType.CLIENT_CREDENTIALS);
                 break;
             default:

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

@@ -180,7 +180,7 @@ public ApiClient(String basePath, String clientId, String clientSecret, Map<Stri
                 throw new IllegalArgumentException("OAuth2 token URL must be an absolute URL");
             }
         }
-        RetryingOAuth retryingOAuth = new RetryingOAuth(tokenUrl, clientId, OAuthFlow.implicit, clientSecret, parameters);
+        RetryingOAuth retryingOAuth = new RetryingOAuth(tokenUrl, clientId, OAuthFlow.IMPLICIT, clientSecret, parameters);
         authentications.put(
                 "petstore_auth",
                 retryingOAuth

samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/auth/RetryingOAuth.java

@@ -64,16 +64,16 @@ public RetryingOAuth(
 
     public void setFlow(OAuthFlow flow) {
         switch(flow) {
-            case accessCode:
+            case ACCESS_CODE:
                 tokenRequestBuilder.setGrantType(GrantType.AUTHORIZATION_CODE);
                 break;
-            case implicit:
+            case IMPLICIT:
                 tokenRequestBuilder.setGrantType(GrantType.IMPLICIT);
                 break;
-            case password:
+            case PASSWORD:
                 tokenRequestBuilder.setGrantType(GrantType.PASSWORD);
                 break;
-            case application:
+            case APPLICATION:
                 tokenRequestBuilder.setGrantType(GrantType.CLIENT_CREDENTIALS);
                 break;
             default:

samples/client/petstore/java/okhttp-gson-nextgen/src/test/java/org/openapitools/client/auth/RetryingOAuthTest.java

@@ -36,7 +36,7 @@ public void setUp() throws Exception {
                 new RetryingOAuth(
                         "_clientId",
                         "_clientSecret",
-                        OAuthFlow.accessCode,
+                        OAuthFlow.ACCESS_CODE,
                         "https://token.example.com",
                         Collections.<String, String>emptyMap());
         oauth.setAccessToken("expired-access-token");