code: def testDtypeMergingBoolsDoesntRaise(self):
      TF_BACKEND.merge_dtypes(np.bool_, np.bool_)
  
file_path: probability/tensorflow_probability/python/experimental/auto_batching/tf_backend_test.py
imports: import hypothesis
  from hypothesis import strategies
  from hypothesis.extra import numpy
  import numpy
  import tensorflow.compat.v2
  from tensorflow_probability.python.experimental.auto_batching import backend_test_lib
  from tensorflow_probability.python.experimental.auto_batching import instructions
  from tensorflow_probability.python.experimental.auto_batching import tf_backend
  from tensorflow_probability.python.internal import hypothesis_testlib
  from tensorflow_probability.python.internal import test_util
label_desc: Use image node_id 4 for calling the TFVariableTest obj's underlying member method code with example usage: obj.testDtypeMergingBoolsDoesntRaise() without return types