fix({Server,Session,Window}.children): Add deprecation warning

Author: tony

src/libtmux/server.py

@@ -630,5 +630,11 @@ def list_sessions(self) -> t.List[Session]:
         warnings.warn("Server.list_sessions is deprecated")
         return self.sessions
 
-    #: Alias :attr:`sessions` for :class:`~libtmux.common.TmuxRelationalObject`
-    children = sessions
+    @property
+    def children(self) -> QueryList["Session"]:  # type:ignore
+        """Was used by TmuxRelationalObject (but that's longer used in this class)
+
+        .. deprecated:: 0.16
+        """
+        warnings.warn("Server.children is deprecated")
+        return self.sessions

src/libtmux/session.py

@@ -687,5 +687,11 @@ def list_windows(self) -> t.List["Window"]:
         warnings.warn("Session.list_windows() is deprecated")
         return self.windows
 
-    #: Was used by TmuxRelationalObject (but that's longer used in this class)
-    children = windows
+    @property
+    def children(self) -> QueryList["Window"]:  # type:ignore
+        """Was used by TmuxRelationalObject (but that's longer used in this class)
+
+        .. deprecated:: 0.16
+        """
+        warnings.warn("Session.children is deprecated")
+        return self.windows

src/libtmux/window.py

@@ -696,6 +696,11 @@ def list_panes(self) -> t.List["Pane"]:
         warnings.warn("list_panes() is deprecated")
         return self.panes
 
-    #: Alias :attr:`panes`, but this wouldn't be needed as its not a
-    #: TmuxRelationalOjbect anymore
-    children = panes
+    @property
+    def children(self) -> QueryList["Pane"]:  # type:ignore
+        """Was used by TmuxRelationalObject (but that's longer used in this class)
+
+        .. deprecated:: 0.16
+        """
+        warnings.warn("Server.children is deprecated")
+        return self.panes