docs: def RenderPayload(self, result, value):
      """Renders GrrMessage payload and renames args_rdf_name field."""
      if "args_rdf_name" in result:
        result["payload_type"] = result["args_rdf_name"]
        del result["args_rdf_name"]
  
      if "args" in result:
        result["payload"] = self._PassThrough(value.payload)
        del result["args"]
  
      return result