code: def check_second_order_unary(
      x, op, grad_grad_op, rtol=None, atol=None
  ):
      check_nth_order_unary(x, op, grad_grad_op, 2, rtol, atol)
  
imports: import math
  import random
  from functools import reduce
  from operator import mul
  import random
  from common import xfail_when_nonstandard_decimal_separator
  import mxnet
  from mxnet import nd, autograd, gluon
  from mxnet.test_utils import assert_almost_equal, random_arrays, random_uniform_arrays, rand_shape_nd, same
label_desc: Use image node_id 30 for calling a global function with example usage: check_second_order_unary(x, op, grad_grad_op, rtol, atol) without return types