code: def testEluGrad(self):
      check_grads(nn.elu, (1e4,), order=4, eps=1.0)
  
imports: import collections
  from functools import partial
  import itertools
  import unittest
  from absl.testing import absltest
  from absl.testing import parameterized
  import scipy.stats
  from jax._src import config
  from jax._src import core
  from jax._src import test_util
  from jax._src import ad_checkpoint
  from jax.test_util import check_grads
  from jax import nn
  from jax import random
  import jax
  import jax.numpy
label_desc: Use image node_id 16 for calling the NNFunctionsTest obj's underlying member method code with example usage: obj.testEluGrad() without return types