code: def _tf_reduce(self, x, reduction_axes, keepdims):
      raise NotImplementedError()
  
file_path: tensorflow-upstream/tensorflow/python/kernel_tests/math_ops/reduction_ops_test_big.py
imports: import numpy
  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 math_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling the BaseReductionTest obj's underlying member method code with example usage: obj._tf_reduce(x, reduction_axes, keepdims) without return types