Chapter "10.4.3. The EventMetadata interface" mentions fireAsyncEvent method

http://docs.jboss.org/cdi/spec/2.0.EDR1/cdi-spec.html#event_metadata

In paragraph for isAsync method there is:

isAsync() returns true if the event was fired with fireAsync() or fireAsyncEvent() methods otherwise returns false.

AFAIK There is no such method.