Statement block - Gen<None> - 20 - (0:0,0)
    Transition span - Gen<None> - [@] - SpanEditHandler;Accepts:None - (0:0,0) - Tokens:1
        CSharpTokenType.Transition;[@];
    Code span - Gen<Stmt> - [if(true) { foo(); }] - SpanEditHandler;Accepts:Any - (1:0,1) - Tokens:13
        CSharpTokenType.Keyword;[if];
        CSharpTokenType.LeftParenthesis;[(];
        CSharpTokenType.Keyword;[true];
        CSharpTokenType.RightParenthesis;[)];
        CSharpTokenType.WhiteSpace;[ ];
        CSharpTokenType.LeftBrace;[{];
        CSharpTokenType.WhiteSpace;[ ];
        CSharpTokenType.Identifier;[foo];
        CSharpTokenType.LeftParenthesis;[(];
        CSharpTokenType.RightParenthesis;[)];
        CSharpTokenType.Semicolon;[;];
        CSharpTokenType.WhiteSpace;[ ];
        CSharpTokenType.RightBrace;[}];
