RazorDocument - [0..22)::22 - [@tagHelperPrefix "Foo"]
    MarkupBlock - [0..22)::22
        MarkupTextLiteral - [0..0)::0 - [] - Gen<Markup> - SpanEditHandler;Accepts:Any
            Marker;[];
        CSharpCodeBlock - [0..22)::22
            RazorDirective - [0..22)::22
                CSharpTransition - [0..1)::1 - Gen<None> - SpanEditHandler;Accepts:None
                    Transition;[@];
                RazorDirectiveBody - [1..22)::21
                    RazorMetaCode - [1..16)::15 - Gen<None> - SpanEditHandler;Accepts:None
                        Identifier;[tagHelperPrefix];
                    CSharpCodeBlock - [16..22)::6
                        MarkupTextLiteral - [16..17)::1 - [ ] - Gen<None> - SpanEditHandler;Accepts:None
                            Whitespace;[ ];
                        CSharpStatementLiteral - [17..22)::5 - ["Foo"] - Gen<TagHelperPrefix:{"Foo";Foo}> - SpanEditHandler;Accepts:AnyExceptNewline
                            StringLiteral;["Foo"];
        MarkupTextLiteral - [22..22)::0 - [] - Gen<Markup> - SpanEditHandler;Accepts:Any
            Marker;[];
    EndOfFile;[];
