MusicKit and sorted artist and album names?

I have an app that gets data from Music.app with both the iTunesLibrary and MusicKit.

iTunesLibrary has ITLibArtist.sortName and ITLibAlbum.sortTitle and ITLibAlbum.sortAlbumArtist.

I can’t seem to find an equivalent in MusicKit. How are those properties obtained using MusicKit? Thanks.

FYI I have filed FB15554956 on this. You also may see my code at https://github.com/bolsinga/itunes_json

MusicKit and sorted artist and album names?
 
 
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