code: final private HttpResponseMessageImpl getResponseImpl() {
          if (null == getMyResponse()) {
              setMyResponse(getObjectFactory().getResponse(this));
              // use limits from the request (not config)
              getMyResponse().setLimitOfTokenSize(getMyRequest().getLimitOfTokenSize());
              getMyResponse().setLimitOnNumberOfHeaders(getMyRequest().getLimitOnNumberOfHeaders());
          }
          return getMyResponse();
      }
docs: Get access to the response message imp for internal usage.
  
  @return HttpResponseMessageImpl