Metadata.java 文件源码

private static void ensureSetup() {
    if (SETUP.get()) {
        return;
    }

    if (!SETUP.getAndSet(true)) {

        // remove player metadata when they leave the server
        Events.subscribe(PlayerQuitEvent.class, EventPriority.MONITOR)
                .handler(e -> StandardMetadataRegistries.PLAYER.remove(e.getPlayer().getUniqueId()));

        // cache housekeeping task
        Scheduler.builder()
                .async()
                .afterAndEvery(1, TimeUnit.MINUTES)
                .run(() -> {
                    for (MetadataRegistry<?> registry : StandardMetadataRegistries.values()) {
                        registry.cleanup();
                    }
                });
    }
}