I need to delete PDF file's bookmarks with PDFKit .
The bookmarks are within the PDF file. Not to make a mutable array to track bookmarks and sustain it.
And I did not get imformation ( powerful API ) from https://developer.apple.com/library/archive/documentation/GraphicsImaging/Conceptual/PDFKitGuide/PDFKit_Prog_Intro/PDFKit_Prog_Intro.html
Other related technology stack is also welcomed.