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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def ParseFileObject(self, parser_mediator, file_object):
 """Parses a bencoded file-like object. Args: parser_mediator (ParserMediator):
 mediates interactions between parsers and other components, such as storage and dfvfs. file_object (dfvfs.FileIO):
 a file-like object. Raises: UnableToParseFile: when the file cannot be parsed. """

    file_object.seek(0, os.SEEK_SET)
    header = file_object.read(2)
    if not self.BENCODE_RE.match(header):
      raise errors.UnableToParseFile('Not a valid Bencoded file.')

    file_object.seek(0, os.SEEK_SET)
    try:
      data_object = bencode.bdecode(file_object.read())

    except (IOError, bencode.BTFailure) as exception:
      raise errors.UnableToParseFile(
          '[{0:s}] unable to parse file: {1:s} with error: {2!s}'.format(
              self.NAME, parser_mediator.GetDisplayName(), exception))

    if not data_object:
      raise errors.UnableToParseFile(
          '[{0:s}] missing decoded data for file: {1:s}'.format(
              self.NAME, parser_mediator.GetDisplayName()))

    for plugin in self._plugins:
      try:
        plugin.UpdateChainAndProcess(parser_mediator, data=data_object)
      except errors.WrongBencodePlugin as exception:
        logger.debug('[{0:s}] wrong plugin: {1!s}'.format(
            self.NAME, exception))