code: def sparse_sizes(self) -> Tuple[int, int]:
      return self._sparse_sizes
  
imports: import warnings
  from typing import List, Optional, Tuple
  import torch
  from torch_scatter import scatter_add, segment_csr
  from torch_sparse.utils import Final, index_sort
label_desc: Use image node_id 12 for calling the SparseStorage obj's underlying member method code with example usage: obj.sparse_sizes() and returns: self