Directive block - Gen<None> - 28 - (0:0,0)
    Code span - Gen<Import: FooBarBaz = FooBarBaz;> - [using FooBarBaz = FooBarBaz;] - SpanEditHandler;Accepts:AnyExceptNewline - (0:0,0) - Tokens:8
        CSharpTokenType.Keyword;[using];
        CSharpTokenType.WhiteSpace;[ ];
        CSharpTokenType.Identifier;[FooBarBaz];
        CSharpTokenType.WhiteSpace;[ ];
        CSharpTokenType.Assign;[=];
        CSharpTokenType.WhiteSpace;[ ];
        CSharpTokenType.Identifier;[FooBarBaz];
        CSharpTokenType.Semicolon;[;];
