docstr: Saves request and tuple cache to a file.
  
  args:
      filepath - base filepath for cache folder (default: "provider/tuple_cache/")
docstr_tok: ["Saves","request","and","tuple","cache","to","a","file",".","args",":","filepath","-","base","filepath","for","cache","folder","(","default",":","``","provider\/tuple_cache\/","''",")"]
code: def save_cache(self, filepath=None):
      """Saves request and tuple cache to a file.
  
      args:
          filepath - base filepath for cache folder (default: "provider/tuple_cache/")
      """
      self._save_requests(filepath=filepath)
      self._save_tuples(filepath=filepath)
  
imports: import os
  import crypten
  import crypten.communicator
  import torch
label_desc: Use image node_id 11 for calling the TupleProvider obj's underlying member method code with example usage: obj.save_cache(filepath) without return types