code: def finish_directory_parse(self):
          '''
          A method to finish up the parsing of this UDF File Entry directory.
          In particular, this method checks to see if it is in sorted order for
          future use.
          Parameters:
           None.
          Returns:
           Nothing.
          '''
          if not self._initialized:
              raise pycdlibexception.PyCdlibInternalError('UDF File Entry not initialized')
          if self.icb_tag.file_type != 4:
              raise pycdlibexception.PyCdlibInternalError('Can only finish_directory for a directory')