anchor.diff:              ),
             ),
             freefoodProvider.isFreeFood(data.messageId)
  -          ? FreeFoodNotification(messageId: data.messageId)
  -          : Container(),
  +              ? FreeFoodNotification(messageId: data.messageId)
  +              : Container(),
           ],
         ),
       );
  
positive.code:     );
    }
  
    Widget _buildLoadingIndicator() {
      return Padding(
      padding: EdgeInsets.only(top: 10.0),
      child: Row(
        mainAxisAlignment: MainAxisAlignment.center,
        children: <Widget>[
          CircularProgressIndicator(),
        ],
      ));
    }
  
    Widget _buildErrorText() {
      return Row(
  
negative.code:           physics: AlwaysScrollableScrollPhysics(),
            itemBuilder: (BuildContext context, int index) => _buildErrorText(),
            controller:
            Provider.of<MessagesDataProvider>(context).scrollController,
            itemCount: 1,
            separatorBuilder: (BuildContext context, int index) => Divider(),
          );
  