code: def tearDown(self) -> None:
      K.clear_session()
      os.remove("activations.json")
  
file_path: keract/tests/persist_load_test.py
imports: import os
  import unittest
  import tensorflow.keras.backend
  import numpy
  from tensorflow.keras import Sequential
  from tensorflow.keras.layers import Dropout, Dense
  from keract import get_activations, persist_to_json_file, load_activations_from_json_file
label_desc: Use image node_id 2 for calling the PersistLoadTest obj's underlying member method code with example usage: obj.tearDown() without return types