Whether to wrap each child in an IndexedSemantics.
Typically, children in a scrolling container must be annotated with a semantic index in order to generate the correct accessibility announcements. This should only be set to false if the indexes have already been provided by an IndexedSemantics widget.
Defaults to true.
- IndexedSemantics, for an explanation of how to manually provide semantic indexes.
final bool addSemanticIndexes;