API does not have a return value. but API spec has

Generated API does not return the HTTP response code.

As shown below, the API specification has responses 200 and 400; however, when the addTeam() API is generated, it is generated with the return type 'void'.

I want to handle the response code 200 and/or 400. Does it mean I have explicitly, define the payload type in the response specification? Can someone please provide more details on how my 'responses' specification should be?

openapi generator 3.2.0

Swagger declaration file content or url

 49   /switches:
 50     post:                                                                                           
 51       summary: Add team                                                                           
 52       operationId: addTeam                                                                        
 53       requestBody:                                                                                  
 54         description: Team detail being added                                                      
 55         content:                                                                                    
 56           application/json:                                                                         
 57             schema:                                                                                 
 58               type: array                                                                           
 59               items:                                                                                
 60                 $ref: "#/components/schemas/addTeamPayload"                                                                           
 61       responses:                                                                                    
 62         200:                                                                                        
 63           description: Ok                                                                           
 64         400:                                                                                        
 65           description: Bad request                                                                  
 66       tags:                                                                                         
 67         - Team

Command line used for generation

java -jar openapi-generator-cli-3.2.0.jar generate -i teamApiSpec.yaml -g java

Generated Java code:

/**
 * Add team
 * 
 * @param body Team detail being added (optional)
 * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
    
 */
public void addTeam(List<AddTeamPayload> body) throws ApiException {
    addTeamWithHttpInfo(body);
}

/**
 * Add Team
 * 
 * @param body Team detail being added (optional)
 * @return ApiResponse&lt;Void&gt;
 * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
    
 */
public ApiResponse<Void> addTeamWithHttpInfo(List<AddTeamPayload> body) throws ApiException {
    com.squareup.okhttp.Call call = addTeamValidateBeforeCall(body, null, null);
    return apiClient.execute(call);
}

Start with teamApiSpec.yaml and reproduce generation using openapi-generator-cli-3.2.0.jar with the Java generator. Inspect the generated addTeam and addTeamWithHttpInfo entry points, then determine the expected handling of the documented 200 and 400 responses. Done means the generated API behavior matches the response specification and is covered by an appropriate generator test or documented resolution.