code: def test_tree_map(self):
      m = nnx.Dict(a=nnx.Param(1))
  
      state, static = m.split()
  
      state = jax.tree_map(lambda x: x + 1, state)
  
imports: import dataclasses
  from copy import deepcopy
  from typing import Any, TypeVar
  import jax
  import jax.numpy
  import pytest
  from flax.experimental import nnx
label_desc: Use image node_id 3 for calling the TestModule obj's underlying member method code with example usage: obj.test_tree_map() without return types