code: def testSoftmaxWeightGradient(self):
      self.assertLess(
          self._BuildAndTestMiniMNIST(3, "softmax_weight"), 1e-8
      )
  
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 gradient_checker
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import nn_ops
  import tensorflow.python.ops.nn_grad
  from tensorflow.python.platform import test
  from tensorflow.python.platform import tf_logging
label_desc: Use image node_id 5 for calling the MiniMNISTTest obj's underlying member method code with example usage: obj.testSoftmaxWeightGradient() without return types