code: private RequestInvoker<CResponse> getApiRequestInvoker( HttpRequestBase request, CPath path )
      {
          return new RequestInvoker<CResponse>( new HttpRequestor( request, path, sessionManager ),
                                                API_RESPONSE_VALIDATOR );
      }
docs: An invoker that checks response content type = XML : to be used by all API requests
  
  @param request API request
  @return a request invoker specific for API requests