listenTo method Null safety

  1. @override
StreamSubscription<BookletModel?> listenTo(
  1. String documentId,
  2. BookletChanged changed,
  3. {BookletErrorHandler? errorHandler}
)
override

Implementation

@override
StreamSubscription<BookletModel?> listenTo(
    String documentId, BookletChanged changed,
    {BookletErrorHandler? errorHandler});