code: def setUp(self):
      self.ef_construction = 200
      self.M = 32
      self.ef = 400
  
      self.num_elements = 1000
      self.num_test_elements = 100
  
      self.num_threads = 4
      self.k = 25
  
      self.label_err_thresh = (
          5  # max number of missing labels allowed per test item
      )
      self.item_err_thresh = (
          5  # max number of items allowed with incorrect labels
      )
  
      self.dists_err_thresh = 50
  
file_path: hnswlib/tests/python/bindings_test_pickle.py
imports: import pickle
  import unittest
  import numpy
  import hnswlib
label_desc: Use image node_id 1 for calling the PickleUnitTests obj's underlying member method code with example usage: obj.setUp() without return types