Something that can be equipped with hand and armour items.
Gets the armour item that this mob has equipped in the given slot.
Gets the equipment item that this mob has equipped in the given slot.
Gets the item that this equipable holds in the given hand.
Sets the armour item that this mob has equipped in the given slot to the given item.
Sets the equipment item that this mob has equipped in the given slot to the given item.
Sets the item that this mob holds in the given hand to the given item.