The ItemToss Event is fired whenever an Item is being tossed from a player's inventory.
Canceling this event will prevent the item from entering the world, thus causing the item to be deleted.

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

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

• IEntityEvent
• IEventCancelable

The following information can be retrieved/set during the event:

ZenGetter	ZenSetter	Type
ZenGetter item	ZenSetter ​	Type IEntityItem
ZenGetter player	ZenSetter ​	Type IPlayer

The following information can be retrieved/set during the event:

ZenGetter	ZenSetter	Type
ZenGetter canceled	ZenSetter canceled	Type bool
ZenGetter entity	ZenSetter ​	Type IEntity

ZenMethods

• event.cancel(); Method, returns void (nothing). Can cancel the event and stop something from happening