code: @Override
      public Object resolveArgument( // NO_UCD (test only)
                                     MethodParameter parameter,
                                     ModelAndViewContainer mavContainer,
                                     NativeWebRequest webRequest,
                                     WebDataBinderFactory binderFactory) {
  
          LOGGER.trace("Accesing to the messages publisher from the request: {}", webRequest);
          return this.context.publisher(nativeRequest(webRequest));
      }
docs: /*
  (non-Javadoc)
  @see
  org.springframework.web.method.support.HandlerMethodArgumentResolver#resolveArgument(org.springframework.core
  .MethodParameter, org.springframework.web.method.support.ModelAndViewContainer,
  org.springframework.web.context.request.NativeWebRequest,
  org.springframework.web.bind.support.WebDataBinderFactory)