public override QuestionNode VisitQuestion(QuestionContext context)
{
if (context == null)
{
throw new ArgumentNullException("Context can't be null");
}
var id = context.ID().GetText();
var rawQuestionText = context.TEXT().GetText();
var question = Util.RemoveQuotes(rawQuestionText);
var qtype = Util.GetQValueTypeFromString(context.QTYPE().GetText());
return(new QuestionNode(Location.FromContext(context), id, question, qtype));
}