code: def testShouldUseResultWhenNotReallyUsed(self):
      @tf_should_use.should_use_result(warn_in_eager=True)
      def return_const(value):
          return constant_op.constant(value, name="blah3")
  
      with reroute_error() as error:
          with self.cached_session():
              return_const(0.0)
              # Creating another op and executing it does not mark the
              # unused op as being "used".
              v = constant_op.constant(1.0, name="meh")
              self.evaluate(v)
      msg = "\n".join(error.call_args[0])
      self.assertIn("Object was never used", msg)
      if not context.executing_eagerly():
          self.assertIn("blah3:0", msg)
      self.assertIn("return_const", msg)
      gc.collect()
      self.assertFalse(gc.garbage)
  
imports: import contextlib
  import gc
  import sys
  from tensorflow.python.eager import context
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import test_util
  from tensorflow.python.platform import test
  from tensorflow.python.platform import tf_logging
  from tensorflow.python.util import tf_should_use
label_desc: Use image node_id 7 for calling the TfShouldUseTest obj's underlying member method code with example usage: obj.testShouldUseResultWhenNotReallyUsed() and returns: constant_op