The PortalSpawn Event is fired when an attempt is made to spawn a nether portal. If cancelled, the portal will not be spawned.

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

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

• IEventCancelable
• IBlockEvent

ZenGetter	Тип	Описание
ZenGetter valid	Тип bool	Описание If the size of portal is valid
ZenGetter height	Тип int	Описание The height of portal
ZenGetter width	Тип int	Описание The width of portal