code: def createReferenceURL(self, pid, name, ref_url, path="", validate=True):
          
          return self.createReferencedFile(pid, path, name, ref_url, validate)
docs: Create a Referenced Content File (.url)
                          :param pid: The HydroShare ID of the resource for which the file should be created
                          :param name: Filename for the referenced file
                          :param ref_url: url to be used in the referenced file
                          :param path: Optional, defaults to contents directory if not provided.  Folder path for the file to be created in
                          :return: JsonResponse on success or HttpResponse with error status code on error
  
                          :raises: HydroShareNotAuthorized if user is not authorized to perform action.
                          :raises: HydroShareNotFound if the resource or resource file was not found.
                          :raises: HydroShareHTTPException if an unexpected HTTP response code is encountered.