code: def Parse(self, parser_mediator, file_object):
      
      if not file_object:
        raise errors.UnableToParseFile('Invalid file object')
  
      if self._INITIAL_FILE_OFFSET is not None:
        file_object.seek(self._INITIAL_FILE_OFFSET, os.SEEK_SET)
  
      parser_mediator.AppendToParserChain(self)
      try:
        self.ParseFileObject(parser_mediator, file_object)
      finally:
        parser_mediator.PopFromParserChain()
docs: Parses a single file-like object.
  
      Args:
        parser_mediator (ParserMediator): a parser mediator.
        file_object (dvfvs.FileIO): a file-like object to parse.
  
      Raises:
        UnableToParseFile: when the file cannot be parsed.