The PlayerPickupXp Event is fired whenever a player picks up experience orbs.

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

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

• IEventCancelable
• IPlayerEvent

The following information can be retrieved from the event:

ZenGetter	Return Type
ZenGetter canceled	Return Type boolean
ZenGetter player	Return Type IPlayer
ZenGetter entityXp	Return Type IEntityXp
ZenGetter xp	Return Type float

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