code: def testNothingSelectedMasker(
      self,
      masking_inputs,
      expected_masked_positions,
      description,
      expected_input_ids=None,
      expected_masked_ids=None,
      axis=1,
  ):
      item_selector = item_selector_ops.NothingSelector()
      values_chooser = masking_ops.MaskValuesChooser(
          _VOCAB_SIZE, _MASK_TOKEN, 0.9, 0.1
      )
      return self.runMaskingOpsTest(
          masking_inputs=masking_inputs,
          description=description,
          expected_input_ids=expected_input_ids,
          expected_masked_ids=expected_masked_ids,
          expected_masked_positions=expected_masked_positions,
          axis=axis,
          item_selector=item_selector,
          values_chooser=values_chooser,
      )
  
imports: from absl.testing import parameterized
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import lookup_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops.ragged import ragged_factory_ops
  from tensorflow.python.ops.ragged import ragged_functional_ops
  from tensorflow.python.platform import test
  from tensorflow_text.python.ops import item_selector_ops
  from tensorflow_text.python.ops import masking_ops
label_desc: Use image node_id 2 for calling the MaskingOpsTest obj's underlying member method code with example usage: obj.testNothingSelectedMasker(masking_inputs, expected_masked_positions, description, expected_input_ids, expected_masked_ids, axis) and returns: self