docstr: Test that the op errors when presented with a single tensor.
docstr_tok: ["Test","that","the","op","errors","when","presented","with","a","single","tensor","."]
code: def test_feature_bitmask_multiple_tensors_error(self):
      """Test that the op errors when presented with a single tensor."""
      data_1 = constant_op.constant([True, False])
      data_2 = constant_op.constant([True, True])
      list_data = [data_1, data_2]
      error_message = (
          "CreateFeatureBitmask does not support lists of tensors.*"
      )
  
      with self.assertRaisesRegexp(
          errors.InvalidArgumentError, error_message
      ):
          _ = create_feature_bitmask_op.create_feature_bitmask(
              list_data
          )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from tensorflow.python.framework import constant_op
  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 array_ops_stack
  from tensorflow.python.platform import test
  from tensorflow_text.python.ops import create_feature_bitmask_op
label_desc: Use image node_id 9 for calling the CreateFeatureBitmaskOpTest obj's underlying member method code with example usage: obj.test_feature_bitmask_multiple_tensors_error() without return types