@protocol PSPDFAnnotationProviderChangeNotifier <NSObject>
protocol AnnotationProviderChangeNotifier : NSObjectProtocol
To be notified on any changes PSPDFKit does on your annotations, implement this notifier.
It will be set as soon as your class is added to the
Call this from your code as soon as annotations change. This method can be called from any thread. (try to avoid the main thread)
WarningDon’t dynamically change the value that
isOverlayreturns, else you’ll confuse the updater.