code: def _FileFetchFailed(self, index, request_name):
      
  
      pathspec, request_data = self._RemoveCompletedPathspec(index)
  
      # Report the request_data for this flow's caller.
      self.FileFetchFailed(pathspec, request_name, request_data=request_data)
docs: Remove pathspec for this index and call the FileFetchFailed method.