code: def testNormalizeMoments(self):
      for shift in [None, 4.0]:
          self._testNormalizeMoments([3], shift)
          self._testNormalizeMoments([2, 3], shift)
  
imports: import numpy
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import gen_nn_ops
  from tensorflow.python.ops import gradient_checker
  from tensorflow.python.ops import gradients_impl
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import nn_impl
  import tensorflow.python.ops.nn_grad
  from tensorflow.python.platform import test
label_desc: Use image node_id 4 for calling the NormalizeMomentsTest obj's underlying member method code with example usage: obj.testNormalizeMoments() without return types