Hopper/BE


 * Block entity data
 * : X coordinate of the block entity.
 * : Y coordinate of the block entity.
 * : Z coordinate of the block entity.
 * : Optional. The name of this container, which will display in its GUI where the default name ordinarily is.
 * : Optional. When not blank, prevents the container from being opened unless the opener is holding an item whose name matches this string.
 * : List of items in the hopper slots.
 * : An item in the hopper, including the slot tag (hopper slots are numbered 0 to 4 from left to right).
 * See Item Format.
 * : Time until the next transfer in game ticks, naturally between 1 and 8 or 0 if there is no transfer.
 * : Time until the next transfer in game ticks, naturally between 1 and 8 or 0 if there is no transfer.