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# Deprecated symbols

Review unsupported symbols and their replacements.

## Discussion

See [Loading media data asynchronously](/documentation/AVFoundation/loading-media-data-asynchronously) for information on the replacement API that’s based on Swift’s concurrency features.

## Topics

### Loading property values

[`func loadValuesAsynchronously(forKeys: [String], completionHandler: (() -> Void)?)`](/documentation/AVFoundation/AVAsynchronousKeyValueLoading/loadValuesAsynchronously(forKeys:completionHandler:))

Tells the asset to load the values of all of the specified keys that aren’t already loaded.

[`func statusOfValue(forKey: String, error: NSErrorPointer) -> AVKeyValueStatus`](/documentation/AVFoundation/AVAsynchronousKeyValueLoading/statusOfValue(forKey:error:))

Returns a status that indicates whether a property value is immediately available without blocking the calling thread.

[`enum AVKeyValueStatus`](/documentation/AVFoundation/AVKeyValueStatus)

Values that indicate the loaded status of a property.


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