Master Chest (pixelmon:master_chest) has a BlockEntity
Full block state: Block{pixelmon:master_chest}[facing=south]
Hardness: -1.0000, Explosion resistance: 6000000.0000, Material: GLASS
Block class: com.pixelmonmod.pixelmon.blocks.PokeChestBlock
BlockState properties:
DirectionProperty{name=facing, clazz=class net.minecraft.util.Direction, values=[north, south, west, east]}: south
BlockEntity class: com.pixelmonmod.pixelmon.blocks.tileentity.PokeChestTileEntity

BlockEntity NBT (from BlockEntity::write()):
[TAG_Compound (14 values)] 
{
    [TAG_Compound (0 values)] "ForgeData"
    {
    }
    [TAG_Int_Array (4 entries)] "Owner"
    [
          0: 0x00000000 (   0)
          1: 0x00000000 (   0)
          2: 0x00000000 (   0)
          3: 0x00000000 (   0)
    ]
    [TAG_Byte] "chestOneTime": 1
    [TAG_Byte] "customDrop": 1
    [TAG_List (1 values of type TAG_Compound)] "customDrops"
    [
        [TAG_Compound (3 values)] 
        {
            [TAG_Byte] "Count": 1
            [TAG_String] "id": "pixelmon:poke_ball"
            [TAG_Compound (1 values)] "tag"
            {
                [TAG_String] "PokeBallID": "master_ball"
            }
        }
    ]
    [TAG_Byte] "dropOneTime": 1
    [TAG_Byte] "grotto": 0
    [TAG_String] "id": "pixelmon:poke_chest"
    [TAG_Byte] "specialEvent": 0
    [TAG_Byte] "timeEnabled": 0
    [TAG_Short] "visibility": 0
    [TAG_Int] "x": 61
    [TAG_Int] "y": 79
    [TAG_Int] "z": 11
}
