code: def dereference(self) -> None:
      raise NotImplementedError("_DummyHandle cannot be dereferenced.")
  
imports: import functools
  import itertools
  from typing import Any, Callable, Generic, TypeVar
  from absl import flags
  from absl import logging
  from launchpad import context
  from launchpad import lazy_loader
  from launchpad.nodes import base
  from launchpad.nodes import dereference
  from launchpad.nodes.python import addressing
  from launchpad.nodes.python import local_multi_processing
  import tree
label_desc: Use image node_id 1 for calling the _DummyHandle obj's underlying member method code with example usage: obj.dereference() without return types