code: def parent(self) -> Mapped[ParentProtocol]:
      ...
  
imports: from datetime import datetime
  from typing import Protocol
  from typing import Union
  from sqlalchemy import ForeignKey
  from sqlalchemy import func
  from sqlalchemy import Nullable
  from sqlalchemy.orm import DeclarativeBase
  from sqlalchemy.orm import Mapped
  from sqlalchemy.orm import mapped_column
  from sqlalchemy.orm import relationship
  from sqlalchemy.sql.elements import SQLCoreOperations
label_desc: Use image node_id 1 for calling the ChildProtocol obj's underlying member method code with example usage: obj.parent() without return types