@class FFFeatureSetIdentifier, NSArray; @interface FFFeatureSet : NSObject @property (readonly, nonatomic) FFFeatureSetIdentifier *identifier; @property (retain, nonatomic) NSArray *features; - (id)initWithIdentifier:(id)a0; - (void).cxx_destruct; - (id)initWithGroup:(id)a0 set:(id)a1; @end