@interface MTNowPlayingArtworkProvider : NSObject { void /* unknown type, empty encoding */ artworkProvider; } - (id)init; - (void).cxx_destruct; - (id)fetchInfoCenterArtworkWith:(id)a0 at:(double)a1 of:(struct CGSize { double x0; double x1; })a2 completion:(id /* block */)a3; @end