PDFKit iOS xcode13.0 beta1

#PDFKit.framework https://github.com/xamarin/xamarin-macios/pull/11987

diff -ruN /Applications/Xcode_12.5.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PDFKit.framework/Headers/PDFDocument.h /Applications/Xcode_13.0.0-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PDFKit.framework/Headers/PDFDocument.h
--- /Applications/Xcode_12.5.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PDFKit.framework/Headers/PDFDocument.h	2021-03-16 09:55:34.000000000 -0400
+++ /Applications/Xcode_13.0.0-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PDFKit.framework/Headers/PDFDocument.h	2021-06-02 12:48:18.000000000 -0400
@@ -52,10 +52,10 @@
 PDFKIT_EXTERN NSNotificationName const PDFDocumentDidEndFindNotification PDFKIT_AVAILABLE(10_4, 11_0);          // The notification object is self, no userInfo dictionary.
 PDFKIT_EXTERN NSNotificationName const PDFDocumentDidBeginPageFindNotification PDFKIT_AVAILABLE(10_4, 11_0);    // The notification object is self, the userInfo dictionary
                                                                                                                 //     contains the page index as an NSNumber for the key
-                                                                                                                //     @"PDFDocumentPageIndex".
+                                                                                                                //     PDFDocumentPageIndexKey.
 PDFKIT_EXTERN NSNotificationName const PDFDocumentDidEndPageFindNotification PDFKIT_AVAILABLE(10_4, 11_0);      // The notification object is self, the userInfo dictionary
                                                                                                                 //     contains the page index as an NSNumber for the key
-                                                                                                                //     @"PDFDocumentPageIndex".
+                                                                                                                //     PDFDocumentPageIndexKey.
 PDFKIT_EXTERN NSNotificationName const PDFDocumentDidFindMatchNotification PDFKIT_AVAILABLE(10_4, 11_0);        // The notification object is self, the userInfo dictionary
                                                                                                                 //     contains a PDFSelection (found instance) for the key
                                                                                                                 //     @"PDFDocumentFoundSelection".
@@ -63,10 +63,16 @@
 PDFKIT_EXTERN NSNotificationName const PDFDocumentDidEndWriteNotification PDFKIT_AVAILABLE(10_4, 11_0);         // The notification object is self, no userInfo dictionary.
 PDFKIT_EXTERN NSNotificationName const PDFDocumentDidBeginPageWriteNotification PDFKIT_AVAILABLE(10_4, 11_0);   // The notification object is self, the userInfo dictionary
                                                                                                                 //     contains the page index as an NSNumber for the key
-                                                                                                                //     @"PDFDocumentPageIndex".
+                                                                                                                //     PDFDocumentPageIndexKey.
 PDFKIT_EXTERN NSNotificationName const PDFDocumentDidEndPageWriteNotification PDFKIT_AVAILABLE(10_4, 11_0);     // The notification object is self, the userInfo dictionary
                                                                                                                 //     contains the page index as an NSNumber for the key
-                                                                                                                //     @"PDFDocumentPageIndex".
+                                                                                                                //     PDFDocumentPageIndexKey.
+
+// Notification keys
+PDFKIT_EXTERN NSString* const PDFDocumentFoundSelectionKey PDFKIT_AVAILABLE(11_1, 15_0);                        // User info dictionary key to get PDFSelection from some
+                                                                                                                // notifications described above
+PDFKIT_EXTERN NSString* const PDFDocumentPageIndexKey PDFKIT_AVAILABLE(11_1, 15_0);                             // User info dictionary key to get page index from some
+                                                                                                                // notifications described above
 
 // Document attributes (see -[documentAttributes] below).
 typedef NSString *PDFDocumentAttribute NS_STRING_ENUM;
@@ -87,6 +93,26 @@
                                                                                                                 // Owners have full privilege over the document.
 PDFKIT_EXTERN PDFDocumentWriteOption const PDFDocumentUserPasswordOption PDFKIT_AVAILABLE(10_4, 11_0);          // NSString for the user's password. Optional for encryption.
                                                                                                                 // Users can have limited access to modify, print, or write the file.
+PDFKIT_EXTERN PDFDocumentWriteOption const PDFDocumentAccessPermissionsOption PDFKIT_AVAILABLE(12_0, 15_0);     // NSNumber containing a PDFAccessPermissions
+
+// Some PDF access permissions are non-strict supersets of other permissions. Granting access to a superset
+// permission also grants access to permission(s) it is a superset of. These permissions are as follows:
+//
+// * Granting PDFAllowsHighQualityPrinting also grants PDFAllowsLowQualityPrinting
+// * Granting PDFAllowsDocumentChanges also grants PDFAllowsCommenting and PDFAllowsFormFieldEntry
+// * Granting PDFAllowsContentCopying also grants PDFAllowsContentAccessibility
+// * Granting PDFAllowsCommenting also grants PDFAllowsFormFieldEntry
+
+typedef NS_ENUM(NSUInteger, PDFAccessPermissions) {
+    PDFAllowsLowQualityPrinting    = (1 << 0),   // Print at up to 150 DPI
+    PDFAllowsHighQualityPrinting   = (1 << 1),   // Print at any DPI
+    PDFAllowsDocumentChanges       = (1 << 2),   // Modify the document contents except for page management
+    PDFAllowsDocumentAssembly      = (1 << 3),   // Page management: insert, delete, and rotate pages
+    PDFAllowsContentCopying        = (1 << 4),   // Extract content (text, images, etc.)
+    PDFAllowsContentAccessibility  = (1 << 5),   // Extract content, but only for the purpose of accessibility
+    PDFAllowsCommenting            = (1 << 6),   // Create or modify annotations, including form field entries
+    PDFAllowsFormFieldEntry        = (1 << 7)    // Modify form field entries
+};
 
 
 PDFKIT_CLASS_AVAILABLE(10_4, 11_0)
@@ -144,6 +170,9 @@
 @property (nonatomic, readonly) BOOL allowsCommenting PDFKIT_AVAILABLE(10_13, 11_0);              // Create or modify annotations, including form field entries
 @property (nonatomic, readonly) BOOL allowsFormFieldEntry PDFKIT_AVAILABLE(10_13, 11_0);          // Modify form field entries, even if allowsCommenting is NO
 
+// Returns all 7 properties above as a PDFAccessPermissions value.
+@property (nonatomic, readonly) PDFAccessPermissions accessPermissions;
+
 // Returns the permissions status of the PDF document. You have kPDFDocumentPermissionsNone status for an encrypted 
 // document that you have not supplied either a valid user or owner password. For a document with no encryption, you 
 // automatically have kPDFDocumentPermissionsOwner status.
diff -ruN /Applications/Xcode_12.5.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PDFKit.framework/Headers/PDFThumbnailView.h /Applications/Xcode_13.0.0-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PDFKit.framework/Headers/PDFThumbnailView.h
--- /Applications/Xcode_12.5.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PDFKit.framework/Headers/PDFThumbnailView.h	2021-03-16 08:48:38.000000000 -0400
+++ /Applications/Xcode_13.0.0-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/PDFKit.framework/Headers/PDFThumbnailView.h	2021-06-02 12:48:18.000000000 -0400
@@ -23,17 +23,13 @@
 
 #endif
 
-@class PDFView, PDFPage, PDFThumbnailViewPrivate;
+@class PDFView, PDFPage;
 
 // Notification when PDFDocument is modified.
 PDFKIT_EXTERN NSString* const PDFThumbnailViewDocumentEditedNotification PDFKIT_AVAILABLE(10_4, 11_0);
 
 PDFKIT_CLASS_AVAILABLE(10_5, 11_0)
 @interface PDFThumbnailView : PDFKitPlatformView <NSCoding>
-{
-@private
-    PDFThumbnailViewPrivate *_private;
-}
 
 // PDFView associated with the thumbnail view.
 @property (nonatomic, weak, nullable) PDFView *PDFView;