public XEventClass getByIndex(int index) {
		for (XEventClass eventClass : classMap.values()) {
			if (eventClass.getIndex() == index) {
				return eventClass;
			}
		}
		return null;
	}
public XEventClass getByIndex ( int index ) { for ( XEventClass eventClass : classMap . values ( ) ) { if ( eventClass . getIndex ( ) == index ) { return eventClass ; } } return null ; }
Returns a given event class by its unique index.

@param index
Unique index of the requested event class.
@return The requested event class. If no matching event class is found,
this method may return <code>null</code>.