code: def csr2csc(self) -> torch.Tensor:
      csr2csc = self._csr2csc
      if csr2csc is not None:
          return csr2csc
  
      idx = self._sparse_sizes[0] * self._col + self.row()
      max_value = self._sparse_sizes[0] * self._sparse_sizes[1]
      _, csr2csc = index_sort(idx, max_value)
      self._csr2csc = csr2csc
      return csr2csc
  
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 23 for calling the SparseStorage obj's underlying member method code with example usage: obj.csr2csc() and returns: csr2csc, csr2csc