#import @interface AudioSource : NSObject @property (readonly, nonatomic) NSString* sourceId; - (instancetype)initWithId:(NSString *)sid; - (int)buildSequence:(NSMutableArray *)sequence treeIndex:(int)treeIndex; - (void)findById:(NSString *)sourceId matches:(NSMutableArray *)matches; - (NSArray *)getShuffleOrder; - (int)shuffle:(int)treeIndex currentIndex:(int)currentIndex; @end