public XAttributeTimestamp createAttributeTimestamp(String key,
			long millis, XExtension extension) {
		return new XAttributeTimestampImpl(intern(key), millis, extension);
	}
public XAttributeTimestamp createAttributeTimestamp ( String key , long millis , XExtension extension ) { return new XAttributeTimestampImpl ( intern ( key ) , millis , extension ) ; }
/* (non-Javadoc)
@see org.deckfour.xes.model.factory.XModelFactory#createAttributeTimestamp(java.lang.String, long, org.deckfour.xes.extension.XExtension)