wrapAll method Null safety

List<RepaintBoundary> wrapAll(
  1. List<Widget> widgets

Wraps each of the given children in RepaintBoundarys.

The key for each RepaintBoundary is derived either from the wrapped child's key (if the wrapped child has a non-null key) or from the wrapped child's index in the list.


static List<RepaintBoundary> wrapAll(List<Widget> widgets) => <RepaintBoundary>[
  for (int i = 0; i < widgets.length; ++i) RepaintBoundary.wrap(widgets[i], i),