Markup block - Gen<None> - 18 - (0:0,0)
    Tag block - Gen<None> - 18 - (0:0,0)
        Markup span - Gen<Markup> - [<a] - SpanEditHandler;Accepts:Any - (0:0,0) - Tokens:2
            SyntaxKind.OpenAngle;[<];
            SyntaxKind.Text;[a];
        Markup block - Gen<Attr:#local, #local='@(2:0,2),'@(14:0,14)> - 13 - (2:0,2)
            Markup span - Gen<None> - [ #local='] - SpanEditHandler;Accepts:Any - (2:0,2) - Tokens:4
                SyntaxKind.Whitespace;[ ];
                SyntaxKind.Text;[#local];
                SyntaxKind.Equals;[=];
                SyntaxKind.SingleQuote;['];
            Markup span - Gen<LitAttr:@(11:0,11)> - [Foo] - SpanEditHandler;Accepts:Any - (11:0,11) - Tokens:1
                SyntaxKind.Text;[Foo];
            Markup span - Gen<None> - ['] - SpanEditHandler;Accepts:Any - (14:0,14) - Tokens:1
                SyntaxKind.SingleQuote;['];
        Markup span - Gen<Markup> - [ />] - SpanEditHandler;Accepts:None - (15:0,15) - Tokens:3
            SyntaxKind.Whitespace;[ ];
            SyntaxKind.ForwardSlash;[/];
            SyntaxKind.CloseAngle;[>];
