anchor.diff:      this.autoScrollContent = false,
       this.selectionNotifier,
       this.activeSearchMatchNotifier,
  +    this.rowItemExtent,
     }) : super(key: key);
   
     final List<T> data;
  
positive.code:           secondarySortColumn: widget.secondarySortColumn,
            onSortChanged: _sortDataAndUpdate,
            activeSearchMatchNotifier: widget.activeSearchMatchNotifier,
          );
        },
      );
  
negative.code:                       child: ListView.builder(
                          controller: scrollController,
                          itemCount: widget.data.length,
                          itemExtent: widget.rowItemExtent,
                          itemBuilder: _buildItem,
                        ),
                      ),
  