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. Note that the loot table is used when the hopper tries to push items, when it's enabled.
 * : 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.