@class NSMutableArray; @interface SKProgress : NSProgress @property (readonly, nonatomic) NSMutableArray *children; + (id)progressWithTotalUnitCount:(long long)a0; - (id)init; - (void)dealloc; - (void)observeValueForKeyPath:(id)a0 ofObject:(id)a1 change:(id)a2 context:(void *)a3; - (void).cxx_destruct; - (void)chainChildProgress:(id)a0 withPendingUnitCount:(long long)a1; @end