*/
void restore_open_placeholder_windows(Con *con);
+/**
+ * Kill the placeholder window, if placeholder refers to a placeholder window.
+ * This function is called when manage.c puts a window into an existing
+ * container. In order not to leak resources, we need to destroy the window and
+ * all associated X11 objects (pixmap/gc).
+ *
+ */
+bool restore_kill_placeholder(xcb_window_t placeholder);
+
#endif