pub fn create_shutdown_event_monitor<TYPES: NodeType, I: NodeImplementation<TYPES>>(
handle: &SystemContextHandle<TYPES, I>,
) -> BoxFuture<'static, ()>pub fn create_shutdown_event_monitor<TYPES: NodeType, I: NodeImplementation<TYPES>>(
handle: &SystemContextHandle<TYPES, I>,
) -> BoxFuture<'static, ()>