@Override
    public void performPlatformDataSync() {
        for (LPSubjectCollection collection : this.service.getLoadedCollections().values()) {
            if (collection instanceof PersistedCollection) {
                ((PersistedCollection) collection).loadAll();
            }
        }
        this.service.invalidateAllCaches();
    }
LuckPerms implementation for the Sponge API.
sponge/src/main/java/me/lucko/luckperms/sponge/LPSpongePlugin.java