Creates an array containing other tracks associated with the track that uses the specified association type.
- iOS 7.0+
- macOS 10.9+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
The association type for which associated tracks are requested.
An array of
AVAsset objects associated with the track by
track. May be empty if no tracks are associated through the specified association type.
You can call this method without blocking after
available has been loaded.