code: def test_frozen_dict_copy_reserved_name(self):
      result = FrozenDict({"a": 1}).copy({"cls": 2})
      self.assertEqual(result, {"a": 1, "cls": 2})
  
file_path: flax/tests/core/core_frozen_dict_test.py
imports: import jax
  from absl.testing import absltest, parameterized
  from flax.core import FrozenDict, copy, freeze, pop, pretty_repr, unfreeze
label_desc: Use image node_id 9 for calling the FrozenDictTest obj's underlying member method code with example usage: obj.test_frozen_dict_copy_reserved_name() without return types