code: def test_WatchYourStep_save_load(tmpdir, barbell):
      generator = AdjacencyPowerGenerator(barbell, num_powers=5)
      wys = WatchYourStep(generator)
      test_utils.model_save_load(tmpdir, wys)
  
file_path: stellargraph/tests/layer/test_watch_your_step.py
imports: from stellargraph.layer import AttentiveWalk, WatchYourStep
  import numpy
  from ..test_utils.graphs import barbell
  from stellargraph.mapper import AdjacencyPowerGenerator
  from stellargraph.losses import graph_log_likelihood
  import pytest
  from tensorflow.keras import Model
  from ..None import test_utils
label_desc: Use image node_id 7 for calling a global function with example usage: test_WatchYourStep_save_load(tmpdir, barbell) without return types