Link to entitylivingfall
The EntityLivingFall Event is fired whenever an entity is set to be falling.
It can be canceled to preven the entity from falling.
Link to event-class
You will need to cast the event in the function header as this class:
You can, of course, also import the class before and use that name then.
Event interface extensions
Link to event-interface-extensions
EntityLivingFallEvent implements the following interfaces and are able to call all of their methods/getters/setters as well:
Link to zengetterzensetter