This event is fired whenever a Wither or Ender Dragon attempts to destroy blocks, or when a zombie attempts to break a door. This event is cancelable, and if canceled, the block will not be broken.

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

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

• IEventPositionable
• IEventCancelable
• ILivingEvent

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

ZenGetter	ZenSetter	Type
ZenGetter state	ZenSetter ​	Type IBlockState