code: def save_index(self, path):
      self.index.save_index(path)
      with open(path + ".pkl", "wb") as f:
          pickle.dump((self.cur_ind, self.dict_labels), f)
  
file_path: hnswlib/examples/python/pyw_hnswlib.py
imports: import hnswlib
  import numpy
  import threading
  import pickle
label_desc: Use image node_id 6 for calling the Index obj's underlying member method code with example usage: obj.save_index(path) without return types