code: def test_box(self):
      x: nnx.Param[int] = nnx.Param(
          1,  # type: ignore
          set_value_hooks=[lambda c, x: x + 1, lambda c, x: x * 2],  # type: ignore
      )
      x.set_value(5)
  
      assert x.value == 12
  
file_path: flax/flax/experimental/nnx/tests/test_containers.py
imports: import pytest
  from flax.experimental import nnx
label_desc: Use image node_id 6 for calling the TestContainers obj's underlying member method code with example usage: obj.test_box() without return types