code: def __init__(self, uselist: bool = False) -> None:
      self._registry: Dict[Tuple[Any, ...], Any] = {}
      self.uselist = uselist
  
imports: from __future__ import annotations
  import collections
  from collections.abc import Iterable
  import textwrap
  from typing import Any
  from typing import Callable
  from typing import cast
  from typing import Dict
  from typing import List
  from typing import Mapping
  from typing import MutableMapping
  from typing import NoReturn
  from typing import Optional
  from typing import overload
  from typing import Sequence
  from typing import Set
  from typing import Tuple
  from typing import Type
  from typing import TYPE_CHECKING
  from typing import TypeVar
  from typing import Union
  import uuid
  import warnings
  from sqlalchemy.util import asbool
  from sqlalchemy.util import immutabledict
  from sqlalchemy.util import to_list
  from sqlalchemy.util import unique_list
  from .compat import inspect_getfullargspec
label_desc: Use image node_id 1 to create a new Dispatcher object  with example: obj = Dispatcher(uselist)