code: def test_l2_space(self):
      test_space_main(self, "l2", 53)
  
file_path: hnswlib/tests/python/bindings_test_pickle.py
imports: import pickle
  import unittest
  import numpy
  import hnswlib
label_desc: Use image node_id 3 for calling the PickleUnitTests obj's underlying member method code with example usage: obj.test_l2_space() without return types