code: def test_policy_for_reloaded_class(self):
      conv_local = conv
  
      policy = jmp.get_policy("p=f16,c=f32,o=f16")
      mixed_precision.set_policy(conv_local.ConvND, policy)
      conv_local = importlib.reload(conv)
  
      params, y = transform_and_run_once(
          lambda: conv_local.ConvND(2, 1, 1)(jnp.ones([1, 1, 1, 1]))
      )
  
      jax.tree_util.tree_map(
          lambda p: self.assertEqual(p, jnp.float16), params
      )
      self.assertEqual(y, jnp.float16)
  
imports: import importlib
  from typing import Optional
  from absl.testing import absltest
  from haiku._src import base
  from haiku._src import conv
  from haiku._src import mixed_precision
  from haiku._src import module
  from haiku._src import test_utils
  from haiku._src import transform
  import jax
  import jax.numpy
  import jmp
label_desc: Use image node_id 14 for calling the MixedPrecisionTest obj's underlying member method code with example usage: obj.test_policy_for_reloaded_class() without return types