RazorDocument - [0..15)::15 - [@custom "Hello"]
    MarkupBlock - [0..15)::15
        MarkupTextLiteral - [0..0)::0 - [] - Gen<Markup> - SpanEditHandler;Accepts:Any
            Marker;[];
        CSharpCodeBlock - [0..15)::15
            RazorDirective - [0..15)::15 - Directive:{custom;CodeBlock;Unrestricted} [RZ1012(15:0,15 [1] )]
                CSharpTransition - [0..1)::1 - Gen<None> - SpanEditHandler;Accepts:None
                    Transition;[@];
                RazorDirectiveBody - [1..15)::14
                    RazorMetaCode - [1..7)::6 - Gen<None> - SpanEditHandler;Accepts:None
                        Identifier;[custom];
                    CSharpCodeBlock - [7..15)::8
                        MarkupEphemeralTextLiteral - [7..8)::1 - [ ] - Gen<None> - SpanEditHandler;Accepts:Whitespace
                            Whitespace;[ ];
                        CSharpStatementLiteral - [8..15)::7 - ["Hello"] - Gen<DirectiveToken {;String;Opt:False}> - DirectiveTokenEditHandler;Accepts:NonWhitespace
                            StringLiteral;["Hello"];
        MarkupTextLiteral - [15..15)::0 - [] - Gen<Markup> - SpanEditHandler;Accepts:Any
            Marker;[];
