AssetPickerViewerPageRouteBuilder<T> typedef
AssetPickerViewerPageRouteBuilder<T> =
AssetPickerViewerPageRoute<T> Function(Widget viewer)
Build AssetPickerViewerPageRoute with the given generic type. 构建匹配泛型的 AssetPickerViewerPageRoute
Implementation
typedef AssetPickerViewerPageRouteBuilder<T> = AssetPickerViewerPageRoute<T>
Function(Widget viewer);