code: def test_display_1(self):
      model, x = dummy_model_and_inputs()
      acts = get_activations(model, x)
      display_activations(acts, save=True)
  
file_path: keract/tests/display_activations_test.py
imports: import os
  import unittest
  from glob import glob
  import numpy
  import tensorflow.keras.backend
  from tensorflow.keras import Input, Model
  from tensorflow.keras.layers import Dense
  from keract import get_activations, display_activations
  from keract.keract import _convert_1d_to_2d
label_desc: Use image node_id 3 for calling the DisplayActivationsTest obj's underlying member method code with example usage: obj.test_display_1() without return types