Returns information about the CryoTank instance.

        Returns:
            dict: A dict containing items and metrics indexes.

async def info(self):
        '''
        Returns information about the CryoTank instance.

        Returns:
            dict: A dict containing items and metrics indexes.
        '''
        stat = self._items.stat()
        return {'indx': self._items.index(), 'metrics': self._metrics.index(), 'stat': stat}