RazorDocument - [0..29)::29 - [@using FooBarBaz = FooBarBaz;]
    MarkupBlock - [0..29)::29
        MarkupTextLiteral - [0..0)::0 - [] - Gen<Markup> - SpanEditHandler;Accepts:Any
            Marker;[];
        CSharpCodeBlock - [0..29)::29
            RazorUsingDirective - [0..29)::29
                CSharpTransition - [0..1)::1 - Gen<None> - SpanEditHandler;Accepts:None
                    Transition;[@];
                RazorDirectiveBody - [1..29)::28
                    CSharpStatementLiteral - [1..29)::28 - [using FooBarBaz = FooBarBaz;] - Gen<Import: FooBarBaz = FooBarBaz;> - SpanEditHandler;Accepts:AnyExceptNewline
                        Keyword;[using];
                        Whitespace;[ ];
                        Identifier;[FooBarBaz];
                        Whitespace;[ ];
                        Assign;[=];
                        Whitespace;[ ];
                        Identifier;[FooBarBaz];
                        Semicolon;[;];
        MarkupTextLiteral - [29..29)::0 - [] - Gen<Markup> - SpanEditHandler;Accepts:Any
            Marker;[];
    EndOfFile;[];
