code: def clear_cache_(self):
      self._rowcount = None
      self._colptr = None
      self._colcount = None
      self._csr2csc = None
      self._csc2csr = None
      return self
  
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 29 for calling the SparseStorage obj's underlying member method code with example usage: obj.clear_cache_() and returns: self