RazorDocument - [0..17)::17 - [<foo>${bar}</foo>]
    MarkupBlock - [0..17)::17
        MarkupTagBlock - [0..5)::5 - [<foo>]
            MarkupTextLiteral - [0..5)::5 - [<foo>] - Gen<Markup> - SpanEditHandler;Accepts:Any
                OpenAngle;[<];
                Text;[foo];
                CloseAngle;[>];
        MarkupTextLiteral - [5..11)::6 - [${bar}] - Gen<Markup> - SpanEditHandler;Accepts:Any
            Text;[${bar}];
        MarkupTagBlock - [11..17)::6 - [</foo>]
            MarkupTextLiteral - [11..17)::6 - [</foo>] - Gen<Markup> - SpanEditHandler;Accepts:Any
                OpenAngle;[<];
                ForwardSlash;[/];
                Text;[foo];
                CloseAngle;[>];
