code: def test_find(self):
      c = cursor(
          GenericTuple(
              x=[
                  0,
                  {"a": 1, "b": (2, 3), ("c", "d"): [4, 5]},
                  (100, 200),
                  [3, 4, 5],
              ],
              y=train_state.TrainState.create(
                  apply_fn=lambda x: x,
                  params=freeze({"a": 1, "b": (2, 3), "c": [4, 5]}),
                  tx=optax.adam(1e-3),
              ),
          )
      )
  
      with self.assertRaisesRegex(
          CursorFindError,
          "More than one object found given the conditions of the cond_fn\\. "
          "The first two objects found have the following paths: "
          "\\.x\\[1]\\['b'] and \\.y\\.params\\['b'] ",
      ):
          c.find(
              lambda path, value: "b" in path
              and isinstance(value, tuple)
          )
      with self.assertRaisesRegex(
          CursorFindError,
          "No object found given the conditions of the cond_fn\\.",
      ):
          c.find(
              lambda path, value: "b" in path and isinstance(value, str)
          )
  
      self.assertEqual(
          c.find(lambda path, value: path.endswith("params/b"))[1]
          .set(30)
          .y.params,
          freeze({"a": 1, "b": (2, 30), "c": [4, 5]}),
      )
  
imports: import dataclasses
  from typing import Any, NamedTuple
  import jax
  import jax.numpy
  import optax
  from absl.testing import absltest
  import flax
  import flax.linen
  from flax.core import freeze
  from flax.cursor import AccessType, _traverse_tree, cursor
  from flax.errors import CursorFindError, TraverseTreeError
  from flax.training import train_state
label_desc: Use image node_id 11 for calling the CursorTest obj's underlying member method code with example usage: obj.test_find() without return types