Called if the discardable contents are no longer being accessed.
- iOS 4.0+
- macOS 10.6+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
This method decrements the counter variable of the object, which will usually bring the value of the counter variable back down to 0, which allows the discardable contents of the object to be thrown away if necessary.
func beginContentAccess() -> Bool
Returns a Boolean value indicating whether the discardable contents are still available and have been successfully accessed.
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