code: def get_random_booleans():
      return np.random.uniform(0, 2, size=(2, 2))
  
imports: import numpy
  import pytest
  import tensorflow
  from tensorflow.keras.metrics import MeanAbsoluteError, TrueNegatives, Metric
  from tensorflow_addons.testing.serialization import check_metric_serialization
label_desc: Use image node_id 2 for calling a global function with example usage: get_random_booleans() and returns: np