public abstract QuestionItemType AddFillQuestion(QuestionEnum qType, Boolean fillData = true);
public abstract QuestionItemType AddQuestion(QuestionEnum qType, Boolean fillData = true, string id = null);
public abstract QuestionItemType AddFillQuestion(QuestionEnum qType, Boolean fillData = true);
public abstract QuestionItemType AddQuestion(QuestionEnum qType, Boolean fillData = true, string id = null);