Expression block - Gen<Expr> - 34 - (0:0,0)
    Transition span - Gen<None> - [@] - SpanEditHandler;Accepts:None - (0:0,0) - Tokens:1
        SyntaxKind.Transition;[@];
    Code span - Gen<Expr> - [foo.bar[4 * (8 + 7)]["fo\"o"].baz] - ImplicitExpressionEditHandler;Accepts:NonWhitespace;ImplicitExpression[RTD];K14 - (1:0,1) - Tokens:21
        SyntaxKind.Identifier;[foo];
        SyntaxKind.Dot;[.];
        SyntaxKind.Identifier;[bar];
        SyntaxKind.LeftBracket;[[];
        SyntaxKind.IntegerLiteral;[4];
        SyntaxKind.Whitespace;[ ];
        SyntaxKind.Star;[*];
        SyntaxKind.Whitespace;[ ];
        SyntaxKind.LeftParenthesis;[(];
        SyntaxKind.IntegerLiteral;[8];
        SyntaxKind.Whitespace;[ ];
        SyntaxKind.Plus;[+];
        SyntaxKind.Whitespace;[ ];
        SyntaxKind.IntegerLiteral;[7];
        SyntaxKind.RightParenthesis;[)];
        SyntaxKind.RightBracket;[]];
        SyntaxKind.LeftBracket;[[];
        SyntaxKind.StringLiteral;["fo\"o"];
        SyntaxKind.RightBracket;[]];
        SyntaxKind.Dot;[.];
        SyntaxKind.Identifier;[baz];
