The PlayerAttackEntity Event is fired whenever a player attacks an Entity.

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

PlayerAttackEntity 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 target	Return Type IEntity

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