RazorDocument - [0..32)::32 - [@addTagHelper     Foo,   Bar    ]
    MarkupBlock - [0..32)::32
        MarkupTextLiteral - [0..0)::0 - [] - Gen<Markup> - SpanEditHandler;Accepts:Any
            Marker;[];
        CSharpCodeBlock - [0..32)::32
            RazorDirective - [0..32)::32
                CSharpTransition - [0..1)::1 - Gen<None> - SpanEditHandler;Accepts:None
                    Transition;[@];
                RazorDirectiveBody - [1..32)::31
                    RazorMetaCode - [1..13)::12 - Gen<None> - SpanEditHandler;Accepts:None
                        Identifier;[addTagHelper];
                    CSharpCodeBlock - [13..32)::19
                        MarkupTextLiteral - [13..18)::5 - [     ] - Gen<None> - SpanEditHandler;Accepts:None
                            Whitespace;[     ];
                        CSharpStatementLiteral - [18..32)::14 - [Foo,   Bar    ] - Gen<AddTagHelper:{Foo,   Bar;Foo,   Bar;Foo;Bar}> - SpanEditHandler;Accepts:AnyExceptNewline
                            Identifier;[Foo];
                            Comma;[,];
                            Whitespace;[   ];
                            Identifier;[Bar];
                            Whitespace;[    ];
        MarkupTextLiteral - [32..32)::0 - [] - Gen<Markup> - SpanEditHandler;Accepts:Any
            Marker;[];
    EndOfFile;[];
