code: def _ProcessMetadataFile(self, mediator, file_entry):
      
      self.processing_status = definitions.STATUS_INDICATOR_EXTRACTING
  
      self._event_extractor.ParseFileEntryMetadata(mediator, file_entry)
      for data_stream in file_entry.data_streams:
        if self._abort:
          break
        self.last_activity_timestamp = time.time()
  
        self._event_extractor.ParseMetadataFile(
            mediator, file_entry, data_stream.name)
docs: Processes a metadata file.
  
      Args:
        mediator (ParserMediator): mediates the interactions between
            parsers and other components, such as storage and abort signals.
        file_entry (dfvfs.FileEntry): file entry of the metadata file.