code: def testLastUserFrame(self):
      trace = tf_stack.extract_stack()
      frame = trace.last_user_frame()
      self.assertRegex(repr(frame), "testLastUserFrame")
  
file_path: tensorflow-upstream/tensorflow/python/util/tf_stack_test.py
imports: from tensorflow.python.platform import test
  from tensorflow.python.util import tf_stack
label_desc: Use image node_id 3 for calling the TFStackTest obj's underlying member method code with example usage: obj.testLastUserFrame() without return types