The queue does not set up an autorelease pool around executed blocks.
- iOS 10.0+
- macOS 10.12+
- Mac Catalyst 13.0+
- tvOS 10.0+
- watchOS 3.0+
- Xcode 8.0+
This option is the default behavior for the system-defined global queues.
The queue inherits its autorelease frequency from its target queue.
The queue configures an autorelease pool before the execution of a block, and releases the objects in that pool after the block finishes executing.