code: def _get_tuple_path(self, prefix=None):
      if prefix is None:
          prefix = self._DEFAULT_CACHE_PATH
      return prefix + f"/tuple_cache-{self.rank}"
  
imports: import os
  import crypten
  import crypten.communicator
  import torch
label_desc: Use image node_id 4 for calling the TupleProvider obj's underlying member method code with example usage: obj._get_tuple_path(prefix) and returns: unknown