anchor.diff:  import '../color_scheme.dart';
   import '../debug.dart';
   import '../dialog.dart';
  -import '../dialog_theme.dart';
   import '../flat_button.dart';
   import '../icons.dart';
   import '../material_localizations.dart';
  
positive.code:     );
  
      final Size dialogSize = _dialogSize(context) * textScaleFactor;
      final DialogTheme dialogTheme = Theme.of(context).dialogTheme;
      return Dialog(
        child: AnimatedContainer(
          width: dialogSize.width,
  
negative.code:         ),
        ),
        insetPadding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 24.0),
        clipBehavior: Clip.antiAlias,
      );
    }
  