The PlayerFillBucket Event is fired whenever a player fills a bucket.

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

PlayerFillBucket 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 player	Return Type IPlayer
ZenGetter result	Return Type IItemStack
ZenGetter emptyBucket	Return Type IItemStack
ZenGetter x	Return Type int
ZenGetter y	Return Type int
ZenGetter z	Return Type int
ZenGetter world	Return Type IWorld
ZenGetter blockState	Return Type IBlockState
ZenGetter block	Return Type IBlock
ZenGetter dimension	Return Type int
ZenGetter rayTraceResult	Return Type IRayTraceResult

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

• event.result = <minecraft:ender_pearl> This will also process the event!