pub fn install_gc_sentinel(engine: Pin<&mut QQmlApplicationEngine>)Expand description
Arms the automatic collection trigger on engine by creating a sentinel.
The sentinel is a dummy QObject with JavaScriptOwnership whose JS
wrapper is referenced by nothing: the next garbage collection frees the
wrapper and thereby deletes the sentinel, whose destroyed() signal runs
collect_garbage and re-arms a new sentinel one event-loop turn later.
crate::QApp arms this automatically; call it manually when driving a raw engine.