Expression block - Gen<Expr> - 46 - (0:0,0)
    MetaCode span - Gen<None> - [(] - SpanEditHandler;Accepts:None - (0:0,0) - Tokens:1
        SyntaxKind.LeftParenthesis;[(];
    Code span - Gen<Expr> - [Request["description"] ?? @photo.Description] - SpanEditHandler;Accepts:Any - (1:0,1) - Tokens:11
        SyntaxKind.Identifier;[Request];
        SyntaxKind.LeftBracket;[[];
        SyntaxKind.StringLiteral;["description"];
        SyntaxKind.RightBracket;[]];
        SyntaxKind.Whitespace;[ ];
        SyntaxKind.NullCoalesce;[??];
        SyntaxKind.Whitespace;[ ];
        SyntaxKind.Transition;[@];
        SyntaxKind.Identifier;[photo];
        SyntaxKind.Dot;[.];
        SyntaxKind.Identifier;[Description];
    MetaCode span - Gen<None> - [)] - SpanEditHandler;Accepts:None - (45:0,45) - Tokens:1
        SyntaxKind.RightParenthesis;[)];
