public Map<String, Object> build(InputEvent evt, Map<String, Object> data) { AuUtility.setEssential(data, "value", evt.getValue(), true); AuUtility.setEssential(data, "start", evt.getStart()); AuUtility.setEssential(data, "bySelectBack", evt.isChangingBySelectBack()); return data; } public Class<InputEvent> getEventClass(){