protected static <E extends Event> void unsubscribeEvent(Class<E> eventClass, final Listener<E> listener) {
        getEventBus().unsubscribe(eventClass, listener);
    }
protected static < E extends Event > void unsubscribeEvent ( Class < E > eventClass , final Listener < E > listener ) { getEventBus ( ) . unsubscribe ( eventClass , listener ) ; }
<p>unsubscribeEvent.</p>

@param eventClass a {@link java.lang.Class} object.
@param listener   a {@link ameba.event.Listener} object.
@param <E> a E object.