code: public ApiSuccessResponse answer(String id, AnswerData answerData) throws ApiException {
          ApiResponse<ApiSuccessResponse> resp = answerWithHttpInfo(id, answerData);
          return resp.getData();
      }
docs: Answer a call
  Answer the specified call.
  @param id The connection ID of the call. (required)
  @param answerData Request parameters. (optional)
  @return ApiSuccessResponse
  @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body