def id_pools_vwwn_ranges(self):
        """
        Gets the IdPoolsRanges API Client for VWWN Ranges.

        Returns:
            IdPoolsRanges:
        """
        if not self.__id_pools_vwwn_ranges:
            self.__id_pools_vwwn_ranges = IdPoolsRanges('vwwn', self.__connection)
        return self.__id_pools_vwwn_ranges