MySliverWaterfallFlowDelegateWithFixedCrossAxisCount typedef
MySliverWaterfallFlowDelegateWithFixedCrossAxisCount = SliverWaterfallFlowDelegateWithFixedCrossAxisCount
Implementation
typedef MySliverWaterfallFlowDelegateWithFixedCrossAxisCount = SliverWaterfallFlowDelegateWithFixedCrossAxisCount;