code: def __reduce__(self):
      return (DaskDistributedBackend, ())
  
imports: from __future__ import print_function, division, absolute_import
  import asyncio
  import concurrent.futures
  import contextlib
  import time
  from uuid import uuid4
  import weakref
  from .parallel import parallel_config
  from .parallel import AutoBatchingMixin, ParallelBackendBase
label_desc: Use image node_id 2 for calling the DaskDistributedBackend obj's underlying member method code with example usage: obj.__reduce__() and returns: DaskDistributedBackend,  