message: [INTEL MKL] Changed the default value of input parameter to None to align with API policy
diff: @@ -70,11 +70,13 @@ def _get_custom_getter():
  @tf_export(v1=['tpu.bfloat16_scope'])
  @tf_contextlib.contextmanager
  -def bfloat16_scope(name=''):
  +def bfloat16_scope(name=None):
  """Scope class for bfloat16 variables so that the model uses custom getter.
  This enables variables to be read as bfloat16 type when using get_variable.
  """
  + if name is None:
  + name = ''
  with variable_scope.variable_scope(
  name, custom_getter=_get_custom_getter()) as varscope:
  yield varscope
  