code: def testConstant(self):
      # This program always returns 2.
      def interpret(n):
          return instructions.interpret(
              test_programs.constant_program(), n
          )
  
      self.assertEqual(2, interpret(5))
  
file_path: probability/tensorflow_probability/python/experimental/auto_batching/instructions_test.py
imports: from tensorflow_probability.python.experimental.auto_batching import instructions
  from tensorflow_probability.python.experimental.auto_batching import test_programs
  from tensorflow_probability.python.internal import test_util
label_desc: Use image node_id 1 for calling the InstructionsTest obj's underlying member method code with example usage: obj.testConstant() and returns: instructions