package jas.spawner.card; import java.util.Collection; import java.util.Map; import com.google.common.collect.BiMap; import jas.spawner.refactor.entities.Group.Groups; import jas.spawner.refactor.entities.Mappings; public class CardRegistry implements Groups<Card> { @Override public String key() { return null; } @Override public Map<String, Card> iDToGroup() { return null; } }