[BUG] Description

Description

When generating code for an openapi yaml with a path containing the following:

     ...
     responses:
        200:
          description: A
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SomeDto
        404:
          description: B

The plugin generates the following annotation:

    @ApiResponses(value = { 
        @ApiResponse(code = 200, message = "A", response = SomeDto.class)
        @ApiResponse(code = 404, message = "B") })

This does not compile: it requires a comma at the end of the second line.

openapi-generator version

5.0.0 and 5.1.0

OpenAPI declaration file content or url

 /bug:
    get:
      tags:
        - bugs
      summary: Bug.
      description: Bug bug.
      operationId: getBug
      responses:
        200:
          description: A
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SomeDto'
        404:
          description: B

Generation Details

Maven config

<plugin>
                <groupId>org.openapitools</groupId>
                <artifactId>openapi-generator-maven-plugin</artifactId>
                <version>5.1.0</version>
                <executions>
                    <execution>
                        <id>produce-bug</id>
                        <goals>
                            <goal>generate</goal>
                        </goals>
                        <configuration>
                            <templateDirectory>${project.basedir}/src/main/resources/templates</templateDirectory>
                            <apiPackage>nl.our.api</apiPackage>
                            <generateApiTests>false</generateApiTests>
                            <generateApiDocumentation>false</generateApiDocumentation>
                            <modelPackage>nl.our.api.model</modelPackage>
                            <generateModelTests>false</generateModelTests>
                            <generateModelDocumentation>false</generateModelDocumentation>
                            <inputSpec>bugi.yaml</inputSpec>
                            <ignoreFileOverride>${project.basedir}/.openapi-generator-ignore</ignoreFileOverride>
                            <invokerPackage>nl.our.api</invokerPackage>
                            <packageName>nl.our.api</packageName>
                            <generatorName>spring</generatorName>
                            <configOptions>
                                <configPackage>nl.ourlib.configuration</configPackage>
                                <dateLibrary>java8</dateLibrary>
                                <useOptional>true</useOptional>
                                <legacyDiscriminatorBehavior>false</legacyDiscriminatorBehavior>
                                <hideGenerationTimestamp>true</hideGenerationTimestamp>
                                <interfaceOnly>true</interfaceOnly>
                            </configOptions>
                        </configuration>
                    </execution>
                </executions>
                <dependencies>
                    <dependency>
                        <groupId>nl.something</groupId>
                        <artifactId>bug-api</artifactId>
                        <version>1.0.0</version>
                        <type>jar</type>
                    </dependency>
                </dependencies>
            </plugin>

Steps to reproduce

mvn clean package -U will indicate the syntax error

Suggest a fix

Add a comma.

Start with the Spring generator templates that emit the @ApiResponses annotation, using the provided bugu.yaml specification as the reproduction case. Run mvn clean package with the shown configuration, then verify that generated Java contains the required comma and compiles successfully.