docs: def _create_indices(self, table_name, indices):
          """
          Create multiple indices (each over multiple columns) on a given table.
  
          Parameters
          ----------
          table_name : str
  
          indices : iterable of tuples
              Multiple groups of columns, each of which should be indexed.
          """
          require_string(table_name, "table_name")
          require_iterable_of(indices, (tuple, list))
          for index_column_set in indices:
              self._create_index(table_name, index_column_set)