PDFKit iOS 12.4 to 13.0 API Differences

PDFThumbnailView.h
Declaration
FromNSString *PDFThumbnailViewDocumentEditedNotification
ToNSString *const PDFThumbnailViewDocumentEditedNotification

Declaration
From@property (nonatomic, strong) PDFView *PDFView
To@property (nonatomic, weak) PDFView *PDFView

PDFView.h