code: public ApiSuccessResponse deleteContact(String id, DeletelData deletelData) throws ApiException {
          ApiResponse<ApiSuccessResponse> resp = deleteContactWithHttpInfo(id, deletelData);
          return resp.getData();
      }
docs: Delete an existing contact
  
  @param id id of the Contact (required)
  @param deletelData Request parameters. (optional)
  @return ApiSuccessResponse
  @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body