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