code: public HttpResponseMessageImpl getResponse() {
          HttpResponseMessageImpl resp = (HttpResponseMessageImpl) this.respPool.get();
          if (null == resp) {
              resp = new HttpResponseMessageImpl();
          }
          if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled()) {
              Tr.debug(tc, "getResponse(): " + resp);
          }
          return resp;
      }
docs: Retrieve an uninitialized response message.
  
  @return HttpResponseMessageImpl