Hopper/BE


 * Block entity data


 * : An item, including the slot tag.
 * : Time until the next transfer in game ticks, naturally between 1 and 8 or 0 if there is no transfer.
 * : Optional. Loot table to be used to fill the hopper when it is next opened, or the items are otherwise interacted with.
 * : Optional. Seed for generating the loot table. 0 or omitted uses a random seed.
 * : Optional. Seed for generating the loot table. 0 or omitted uses a random seed.