code: def test_abs(self, same_inputs, do_stabilize):
      key = random.PRNGKey(1)
      X0_1 = random.normal(key, (3, 2))
      fc = stax.Dense(5, 1, 0)
  
      X0_2 = None if same_inputs else random.normal(key, (4, 2))
  
      # Test that Abs == ABRelu(-1, 1)
      init_fn, apply_leaky_relu, kernel_fn_abs = stax.serial(
          fc, stax.Abs(do_stabilize=do_stabilize)
      )
      _, apply_ab_relu, kernel_fn_ab_relu = stax.serial(
          fc, stax.ABRelu(-1, 1)
      )
  
      _, params = init_fn(key, input_shape=X0_1.shape)
      X1_1_abs = apply_leaky_relu(params, X0_1)
      X1_1_ab_relu = apply_ab_relu(params, X0_1)
      self.assertAllClose(X1_1_abs, X1_1_ab_relu)
  
      kernels_abs = kernel_fn_abs(X0_1, X0_2, ("nngp", "ntk"))
      kernels_ab_relu = kernel_fn_ab_relu(X0_1, X0_2, ("nngp", "ntk"))
      self.assertAllClose(kernels_abs, kernels_ab_relu)
  
imports: import itertools
  import random
  from absl.testing import absltest
  from jax import config
  from jax import default_backend
  from jax import grad, jacfwd, jacrev, jit, jvp, value_and_grad
  from jax import random
  import jax.numpy
  import neural_tangents
  from neural_tangents import stax
  from neural_tangents._src.empirical import _DEFAULT_TESTING_NTK_IMPLEMENTATION
  from tests import test_utils
label_desc: Use image node_id 4 for calling the ABReluTest obj's underlying member method code with example usage: obj.test_abs(same_inputs, do_stabilize) without return types