public Object ceiling(Object e) { return map.ceilingKey(e); }
public Object ceiling(Object e) { return map.ceilingKey(e); }
public Object ceiling(Object e) { return map.ceilingKey(e); }
public Object ceiling(Object e) { return map.ceilingKey(e); }
public Object ceiling(Object e) { return map.ceilingKey(e); }
public Object ceiling(Object e) { return map.ceilingKey(e); }