code: def q(cls) -> None:
      return None
  
file_path: sqlalchemy/test/ext/mypy/plugin_files/mixin_three.py
imports: from typing import Callable
  from sqlalchemy import Column
  from sqlalchemy import Integer
  from sqlalchemy import String
  from sqlalchemy.orm import deferred
  from sqlalchemy.orm import Mapped
  from sqlalchemy.orm.decl_api import declarative_mixin
  from sqlalchemy.orm.decl_api import declared_attr
  from sqlalchemy.orm.interfaces import MapperProperty
label_desc: Use image node_id 3 for calling the HasAMixin obj's underlying member method code with example usage: obj.q(cls) and returns: None