package pers.xanadu.enderdragon.nms.BossBar; import org.bukkit.World; import pers.xanadu.enderdragon.metadata.MyDragon; import java.util.List; public interface IBossBarManager { void saveBossBarData(List worlds); void loadBossBarData(List worlds); void setBossBar(World world, final MyDragon myDragon); }