code: def test_simple_variable(self):
      external_var = tf.Variable(1.0)
  
      @authoring.compatible
      @tf.function(
          input_signature=[
              tf.TensorSpec(shape=[None], dtype=tf.float32)
          ]
      )
      def f(x):
          return x * external_var
  
      result = f(tf.constant(2.0, shape=(1)))
      log_messages = f.get_compatibility_log()
  
      self.assertEqual(result, tf.constant([2.0]))
      self.assertEmpty(log_messages)
  
file_path: tensorflow-upstream/tensorflow/lite/python/authoring/authoring_test.py
imports: import tensorflow
  from tensorflow.lite.python.authoring import authoring
label_desc: Use image node_id 6 for calling the TFLiteAuthoringTest obj's underlying member method code with example usage: obj.test_simple_variable() and returns: unknown