def indices_to_level_indices(self, indices):
        """ Converts indices to indices at each level, perhaps needed for a transformer with factorized embeddings """
        indices = rearrange(indices, '... -> ... 1')
        codes_non_centered = (indices // self._basis) % self._levels
        return codes_non_centered
 Converts indices to indices at each level, perhaps needed for a transformer with factorized embeddings 
ioblocks.py