In the past QLThumbnailImageCreate would return an NSImage from a url pointing to a webarchive. It's not doing so now. Is this a bug, or do I not understand something?

There are a number of answers to this question on the web. The latest that I have found is for early 2020, and it no longer seems appropriate. What is the current method?

When a user is editing a NSTextView and commits some kinds of operations (e.g. Quiting an app), the NSTextView's textStorage does not contain the current contents of the NSTextView. How do I get the current contents?

When calling:NSURL* aURL = [NSURL URLByResolvingBookmarkData:secBookmark options:options relativeToURL:nil bookmarkDataIsStale:&isStale error:&err];isStale is YES.When attempting to get a fresh bookmark, calling:NSData* secureBookmark = [aURL bookmarkDataWithOptions:options includingResourceValuesForKeys:nil relativeToURL:nil error:&err];produces:2019-03-11 15:53:51.603133-0700 XXX[534:8439] Error: Error Domain=NSCocoaErrorDomain Code=256 "Could not open() the item" UserInfo={NSURL=file:///Users/oldmancoyote1/Desktop/E%20Projects%20folder/Drawing/Drawing%201%20.pdf, NSDebugDescription=Could not open() the item}If I ignore isStale, there appears to be no problem. Can I safely ignore isStale?