code: def test_path(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),
              ),
          )
      )
      self.assertEqual(
          c.x[1][("c", "d")][0]._path, ".x[1][('c', 'd')][0]"
      )
      self.assertEqual(c.x[2][1]._path, ".x[2][1]")
      self.assertEqual(c.y.params["b"][1]._path, ".y.params['b'][1]")
  
      # test path when first access type is item access
      c = cursor([1, GenericTuple("a", 2), (3, 4)])
      self.assertEqual(c[1].x._path, "[1].x")
      self.assertEqual(c[2][0]._path, "[2][0]")
  
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 3 for calling the CursorTest obj's underlying member method code with example usage: obj.test_path() without return types