Releases any private data or resources associated with the data consumer.
- iOS 2.0+
- macOS 10.4+
- tvOS 9.0+
- watchOS 2.0+
A generic pointer to private data shared among your callback functions. This is the same pointer you supplied to
When Core Graphics frees a data consumer that has an associated release function, the release function is called.
For information on how to associate your callback function with a data consumer, see
Creating Data Consumers
Creates a data consumer that writes data to a location specified by a URL.