docstr: Tests setting and getting model returns the same value.
docstr_tok: ["Tests","setting","and","getting","model","returns","the","same","value","."]
code: def test_set_get_model_identity(self):
      """Tests setting and getting model returns the same value."""
      packed = packed_tensors.PackedTensors()
      packed.model = "xyz"
      packed = packed_tensors.PackedTensors(packed.string)
      self.assertEqual(packed.model, "xyz")
      del packed.model
  
imports: import tensorflow
  from tensorflow_compression.python.util import packed_tensors
label_desc: Use image node_id 2 for calling the PackedTensorsTest obj's underlying member method code with example usage: obj.test_set_get_model_identity() without return types