Method handle

tests/all/debug.rs:1365–1372

(&self, _store: StoreContextMut<'_, ()>, event: DebugEvent<'_>)

    impl DebugHandler for CountingHandler {
        type Data = ();
        async fn handle(&self, _store: StoreContextMut<'_, ()>, event: DebugEvent<'_>) {
            match event {
                DebugEvent::Breakpoint => {
                    self.0.fetch_add(1, Ordering::Relaxed);
                }
                _ => {}
            }
        }
    }

    let counter = Arc::new(AtomicUsize::new(0));