BlockBurnEvent

Called when a block is destroyed as a result of being burnt by fire.

If a Block Burn event is cancelled, the block will not be destroyed as a

result of being burnt by fire.

当方块被火焰所烧毁时触发。

如果本事件被取消，则涉事方块不会被火焰所烧毁。

译注：有时，火焰在燃烧一段时间后自然熄灭，不会烧毁被点燃的方块。此时可以监听 BlockFadeEvent 。

Gets the block which ignited this block.

@return The Block that ignited and burned this block, or null if no

source block exists

该方法用于获取点燃涉事方块的火源方块。

@return 点燃涉事方块的火源方块。如果火源方块不存在，则返回 null 。