Enum generated as Java interface about fut HOT 6 CLOSED

public enum* Inventory
{
	None = 0,
	Gun = 1,
	Knife = 2,
	Weapons = Gun | Knife,
	Key = 4
}

import java.util.EnumSet;

public enum Inventory
{
	_GUN,
	_KNIFE,
	_KEY;
	public static final EnumSet<Inventory> NONE = EnumSet.noneOf(Inventory.class);
	public static final EnumSet<Inventory> GUN = EnumSet.of(_GUN);
	public static final EnumSet<Inventory> KNIFE = EnumSet.of(_KNIFE);
	public static final EnumSet<Inventory> WEAPONS = EnumSet.of(_GUN, _KNIFE);
	public static final EnumSet<Inventory> KEY = EnumSet.of(_KEY);

	/// The `&` operator.
	public static EnumSet<Inventory> retaining(EnumSet<Inventory> a, EnumSet<Inventory> b)
	{
		EnumSet<Inventory> result = EnumSet.copyOf(a);
		result.retainAll(b);
		return result;
	}

	/// The `|` operator.
	public static EnumSet<Inventory> adding(EnumSet<Inventory> a, EnumSet<Inventory> b)
	{
		EnumSet<Inventory> result = EnumSet.copyOf(a);
		result.addAll(b);
		return result;
	}
}