anchor.diff:      if (content != null) {
         children.add(new Flexible(
           child: new Padding(
  -          padding: contentPadding ?? const EdgeInsetsDirectional.fromSTEB(24.0, 20.0, 24.0, 24.0),
  +          padding: contentPadding,
             child: new DefaultTextStyle(
               style: Theme.of(context).textTheme.subhead,
               child: content,
  
positive.code:     if (children != null) {
        body.add(new Flexible(
          child: new SingleChildScrollView(
            padding: contentPadding ?? const EdgeInsetsDirectional.fromSTEB(0.0, 12.0, 0.0, 16.0),
            child: new ListBody(children: children),
          )
        ));
  
negative.code: 
      if (title != null) {
        body.add(new Padding(
          padding: titlePadding,
          child: new DefaultTextStyle(
            style: Theme.of(context).textTheme.title,
            child: title,
          )
        ));
      }
  