EquipmentSlot Enumeration

I like what has been done so far with Minecraft It has come a long way I was thinking to add Vanity Slots so

Types of slots: · Slot ids · Basic slot · Other slots · Action types

minecraft elytra slot Minecraft Code Editor using Blocks or JavaScript

minecraft slot machine I made a block entity in forge 1, I want to prevent hopper from taking input slot item, i tried to override the extractItem method,