typing: Gio: Add hints for ListStore

src/gi-stubs/repository/Gio.pyi

@@ -6156,20 +6156,35 @@ class ListStore(GObject.Object, ListModel):
     def __init__(self, item_type: typing.Type[typing.Any] = ...) -> None: ...
     def append(self, item: GObject.Object) -> None: ...
     def find(self, item: GObject.Object) -> typing.Tuple[bool, int]: ...
-    def find_with_equal_func(self, item, equal_func, *user_data): ...  # FIXME Function
+    # override
+    def find_with_equal_func(
+        self,
+        item: typing.Optional[GObject.Object],
+        equal_func: typing.Callable[..., bool],
+        *user_data: typing.Any,
+    ) -> typing.Tuple[bool, int]: ...
     def find_with_equal_func_full(
         self,
         item: typing.Optional[GObject.Object],
         equal_func: typing.Callable[..., bool],
         *user_data: typing.Any,
     ) -> typing.Tuple[bool, int]: ...
     def insert(self, position: int, item: GObject.Object) -> None: ...
-    def insert_sorted(self, item, compare_func, *user_data): ...  # FIXME Function
+    # override
+    def insert_sorted(
+        self,
+        item: GObject.Object,
+        compare_func: typing.Callable[..., int],
+        *user_data: typing.Any,
+    ) -> int: ...
     @classmethod
     def new(cls, item_type: typing.Type[typing.Any]) -> ListStore: ...
     def remove(self, position: int) -> None: ...
     def remove_all(self) -> None: ...
-    def sort(self, compare_func, *user_data): ...  # FIXME Function
+    # override
+    def sort(
+        self, compare_func: typing.Callable[..., int], *user_data: typing.Any
+    ) -> int: ...
     def splice(
         self, position: int, n_removals: int, additions: typing.Sequence[GObject.Object]
     ) -> None: ...