code: def _ParseOriginalFilename(self, file_object, format_version):
      
      file_offset = file_object.tell()
  
      if format_version == 1:
        data_type_map = self._GetDataTypeMap(
            'recycle_bin_metadata_utf16le_string')
      else:
        data_type_map = self._GetDataTypeMap(
            'recycle_bin_metadata_utf16le_string_with_size')
  
      try:
        original_filename, _ = self._ReadStructureFromFileObject(
            file_object, file_offset, data_type_map)
      except (ValueError, errors.ParseError) as exception:
        raise errors.ParseError(
            'Unable to parse original filename with error: {0!s}'.format(
                exception))
  
      if format_version == 1:
        return original_filename.rstrip('\x00')
  
      return original_filename.string.rstrip('\x00')
docs: Parses the original filename.
  
      Args:
        file_object (FileIO): file-like object.
        format_version (int): format version.
  
      Returns:
        str: filename or None on error.
  
      Raises:
        ParseError: if the original filename cannot be read.