code: def test_empirical_ntk(self):
      empirical_ntk.main(None)
  
imports: from absl.testing import absltest
  from jax import config
  from examples import empirical_ntk
  from tests import test_utils
label_desc: Use image node_id 1 for calling the EmpiricalNtkTest obj's underlying member method code with example usage: obj.test_empirical_ntk() without return types