Directive block - Gen<Directive:{custom;SingleLine;Unrestricted}> - 46 - (0:0,0)
    Code span - Gen<Stmt> - [LF  ] - SpanEditHandler;Accepts:Any - (0:0,0) - Symbols:2
        CSharpSymbolType.NewLine;[LF];
        CSharpSymbolType.WhiteSpace;[  ];
    Transition span - Gen<None> - [@] - SpanEditHandler;Accepts:None - (4:1,2) - Symbols:1
        CSharpSymbolType.Transition;[@];
    MetaCode span - Gen<None> - [custom] - SpanEditHandler;Accepts:None - (5:1,3) - Symbols:1
        CSharpSymbolType.Identifier;[custom];
    Code span - Gen<None> - [ ] - SpanEditHandler;Accepts:WhiteSpace - (11:1,9) - Symbols:1
        CSharpSymbolType.WhiteSpace;[ ];
    Code span - Gen<DirectiveToken {;Type;Opt:False}> - [System.Text.Encoding.ASCIIEncoding] - DirectiveTokenEditHandler;Accepts:NonWhiteSpace - (12:1,10) - Symbols:7
        CSharpSymbolType.Identifier;[System];
        CSharpSymbolType.Dot;[.];
        CSharpSymbolType.Identifier;[Text];
        CSharpSymbolType.Dot;[.];
        CSharpSymbolType.Identifier;[Encoding];
        CSharpSymbolType.Dot;[.];
        CSharpSymbolType.Identifier;[ASCIIEncoding];
