def _append_value(self, value, _file, _name):
        """Call this function to write contents.

        Keyword arguments:
            * value - dict, content to be dumped
            * _file - FileIO, output file
            * _name - str, name of current content dict

        """
        _tabs = '\t' * self._tctr
        _keys = '{tabs}<key>{name}</key>\n'.format(tabs=_tabs, name=_name)
        _file.seek(self._sptr, os.SEEK_SET)
        _file.write(_keys)

        self._append_dict(value, _file)