public override FormObject VisitQuestion(QLMainParser.QuestionContext context)
        {
            string         identifier = context.id().GetText();
            PositionInText IdPosition = new PositionInText(context.id());
            PositionInText position   = new PositionInText(context);

            Types.Type typeName = context.type().Accept(new TypeVisitor());

            Expression computation = context.computed() != null?context.computed().expression().Accept(new ExpressionVisitor()) : null;

            return(new Question(new Id(identifier, IdPosition), typeName, MakeLabel(context.label()), computation,
                                position));
        }