The PlayerBonemeal Event is fired whenever a player uses bonemeal on a block.

You will need to cast the event in the function header as this class:
crafttweaker.event.PlayerBonemealEvent
You can, of course, also import the class before and use that name then.

PlayerBonemeal Events implement the following interfaces and are able to call all of their methods/getters/setters as well:

• IEventCancelable
• IPlayerEvent
• IProcessableEvent
• IEventPositionable

The following information can be retrieved from the event:

ZenGetter	Return Type
ZenGetter canceled	Return Type boolean
ZenGetter processed	Return Type boolean
ZenGetter x	Return Type int
ZenGetter y	Return Type int
ZenGetter z	Return Type int
ZenGetter player	Return Type IPlayer
ZenGetter world	Return Type IWorld
ZenGetter block	Return Type IBlock
ZenGetter blockState	Return Type IBlockState
ZenGetter blockPos	Return Type IBlockPos
ZenGetter dimension	Return Type int
ZenGetter item	Return Type IItemStack

• event.cancel() sets the event as cancelled
• event.process() sets the event as processed