code: def _tensors_names_set(tensor_sequence):
      """Converts tensor sequence to a set of tensor references."""
      # Tensor name stands as a proxy for the uniqueness of the tensors.
      # In TensorFlow 2.x one can use the `experimental_ref` method, but it is not
      # available in older TF versions.
      return {t.name for t in tensor_sequence}
  
imports: import json
  import os
  from absl.testing import parameterized
  import numpy
  import tensorflow
  import tensorflow_hub
label_desc: Use image node_id 5 for calling a global function with example usage: _tensors_names_set(tensor_sequence) and returns: unknown