code: def test_skip_stack_frames(self):
      first = traceback.format_stack()
      second = traceback.format_stack()
      result = template._skip_common_stack_elements(first, second)
      self.assertEqual(1, len(result))
      self.assertNotEqual(len(first), len(result))
  
imports: import functools
  import traceback
  from tensorflow.python.client import session
  from tensorflow.python.eager import context
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import random_seed
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import init_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import template
  from tensorflow.python.ops import variable_scope
  from tensorflow.python.ops import variables
  import tensorflow.python.ops.nn_grad
  from tensorflow.python.platform import test
  from tensorflow.python.training import gradient_descent
label_desc: Use image node_id 4 for calling the TemplateTest obj's underlying member method code with example usage: obj.test_skip_stack_frames() without return types