fix

Author: lucc

khard/carddav_object.py

@@ -39,6 +39,8 @@
 def multi_property_key(item: str) -> Tuple[Literal[0], str]: ...
 @overload
 def multi_property_key(item: Dict[T, Any]) -> Tuple[Literal[1], T]: ...
+@overload
+def multi_property_key(item: Union[str, Dict[T, Any]]) -> Tuple[Union[Literal[0], Literal[1]], Union[str, T]]: ...
 def multi_property_key(item: Union[str, Dict[T, Any]]
                        ) -> Tuple[int, Union[T, str]]:
     """Key function to pass to sorted(), allowing sorting of dicts with lists