code: protected HttpRequestMessageImpl getRequestImpl() {
          if (null == getMyRequest()) {
              setMyRequest(getObjectFactory().getRequest(this));
              getMyRequest().setHeaderChangeLimit(getHttpConfig().getHeaderChangeLimit());
          }
          setStartTime();
          return getMyRequest();
      }
docs: Get access to the request message impl for internal use.
  
  @return HttpRequestMessageImpl