Directive block - Gen<Directive:{custom;SingleLine;Unrestricted}> - 67 - (0:0,0)
    Transition span - Gen<None> - [@] - SpanEditHandler;Accepts:None - (0:0,0) - Tokens:1
        SyntaxKind.Transition;[@];
    MetaCode span - Gen<None> - [custom] - SpanEditHandler;Accepts:None - (1:0,1) - Tokens:1
        SyntaxKind.Identifier;[custom];
    Code span - Gen<None> - [    ] - SpanEditHandler;Accepts:Whitespace - (7:0,7) - Tokens:1
        SyntaxKind.Whitespace;[    ];
    Code span - Gen<DirectiveToken {;Type;Opt:False}> - [System.Text.Encoding.ASCIIEncoding] - DirectiveTokenEditHandler;Accepts:NonWhitespace - (11:0,11) - Tokens:7
        SyntaxKind.Identifier;[System];
        SyntaxKind.Dot;[.];
        SyntaxKind.Identifier;[Text];
        SyntaxKind.Dot;[.];
        SyntaxKind.Identifier;[Encoding];
        SyntaxKind.Dot;[.];
        SyntaxKind.Identifier;[ASCIIEncoding];
    Code span - Gen<None> - [       ] - SpanEditHandler;Accepts:Whitespace - (45:0,45) - Tokens:1
        SyntaxKind.Whitespace;[       ];
    Code span - Gen<DirectiveToken {;Member;Opt:False}> - [Some_Member] - DirectiveTokenEditHandler;Accepts:NonWhitespace - (52:0,52) - Tokens:1
        SyntaxKind.Identifier;[Some_Member];
    None span - Gen<None> - [    ] - SpanEditHandler;Accepts:Whitespace - (63:0,63) - Tokens:1
        SyntaxKind.Whitespace;[    ];
