code: def test_stateful_equivalence(self):
      def f():
          mod = transform_flax.lift(counter, name="foo")
          return mod()
  
      counter = Counter()
      f = transform.transform_with_state(f)
  
      rng = jax.random.PRNGKey(42)
      _, state = f.init(rng)
      variables = counter.init(rng)
      self.assertEqual(state, {"foo/state/~": {"count": 0}})
      self.assertEqual(variables, {"state": {"count": 0}})
  
      for i in range(10):
          out_hk, state = f.apply({}, state, None)
          out_flax, variables = counter.apply(
              variables, mutable=["state"]
          )
          self.assertEqual(out_hk, out_flax)
          self.assertEqual(state, {"foo/state/~": {"count": i + 1}})
          self.assertEqual(variables, {"state": {"count": i + 1}})
  
imports: from absl.testing import absltest
  from absl.testing import parameterized
  import flax.errors
  import flax.linen
  from haiku._src import base
  from haiku._src import module
  from haiku._src import transform
  from haiku._src.flax import transform_flax
  import jax
  import jax.numpy
label_desc: Use image node_id 6 for calling the TransformFlaxTest obj's underlying member method code with example usage: obj.test_stateful_equivalence() and returns: mod