class_docstr: Test the transform function (validate and dispatch).
docstr: Test the dispatcher attributes.
code: def test_dispatched_transform_attribute(self):
      """Test the dispatcher attributes."""
      dispatched_transform = transform(first_valid_transform)
  
      assert dispatched_transform.transform is first_valid_transform
      assert dispatched_transform.expand_transform is None
      assert dispatched_transform.classical_cotransform is None
  
imports: from typing import Sequence, Callable
  from functools import partial
  import pytest
  import pennylane
  from pennylane.transforms.core import transform, TransformError, TransformContainer
label_desc: Use image node_id 14 for calling the TestTransformDispatcher obj's underlying member method code with example usage: obj.test_dispatched_transform_attribute() without return types