AudioLanguageSelected Deprecated?

Static analysis gives me the following warning:

[WARNING] The content metadata field "AudioLanguageSelected" has been deprecated.

The documentation does not indicate this to be the case.  In fact, it recommends using AudioLanguageSelected as a replacement for the playback control attribute AudioPIDPref.

Can anyone confirm that this warning message is accurate?  And if so, what is the replacement for AudioLanguageSelected?