RazorDocument - [0..17)::17 - [@addTagHelper Foo]
    MarkupBlock - [0..17)::17
        MarkupTextLiteral - [0..0)::0 - [] - Gen<Markup> - SpanEditHandler;Accepts:Any
            Marker;[];
        CSharpCodeBlock - [0..17)::17
            RazorDirective - [0..17)::17
                CSharpTransition - [0..1)::1 - Gen<None> - SpanEditHandler;Accepts:None
                    Transition;[@];
                RazorDirectiveBody - [1..17)::16
                    RazorMetaCode - [1..13)::12 - Gen<None> - SpanEditHandler;Accepts:None
                        Identifier;[addTagHelper];
                    CSharpCodeBlock - [13..17)::4
                        MarkupTextLiteral - [13..14)::1 - [ ] - Gen<None> - SpanEditHandler;Accepts:None
                            Whitespace;[ ];
                        CSharpStatementLiteral - [14..17)::3 - [Foo] - Gen<AddTagHelper:{Foo;Foo;;} [RZ1036(14:0,14 [3] )]> - SpanEditHandler;Accepts:AnyExceptNewline
                            Identifier;[Foo];
        MarkupTextLiteral - [17..17)::0 - [] - Gen<Markup> - SpanEditHandler;Accepts:Any
            Marker;[];
    EndOfFile;[];
