code: def test_modules_iterator(self):
      class Foo(nnx.Module):
          def __init__(self, *, rngs: nnx.Rngs):
              self.submodules = [
                  {"a": nnx.Linear(1, 1, rngs=rngs)},
                  {"b": nnx.Conv(1, 1, 1, rngs=rngs)},
              ]
  
      module = Foo(rngs=nnx.Rngs(0))
  
      modules = list(module.modules())
  
      assert len(modules) == 3
      assert modules[0][0] == ""
      assert isinstance(modules[0][1], Foo)
      assert modules[1][0] == "submodules/0/a"
      assert isinstance(modules[1][1], nnx.Linear)
      assert modules[2][0] == "submodules/1/b"
      assert isinstance(modules[2][1], nnx.Conv)
  
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 TestModuleDef obj's underlying member method code with example usage: obj.test_modules_iterator() without return types