@class NSSet; @protocol MLFeatureProvider; @interface MLLazyUnionFeatureProvider : NSObject <MLFeatureProvider> @property (retain, nonatomic) id<MLFeatureProvider> first; @property (retain, nonatomic) id<MLFeatureProvider> second; @property (readonly, nonatomic) NSSet *featureNames; - (void).cxx_destruct; - (id)featureValueForName:(id)a0; - (id)initWithFeaturesFrom:(id)a0 addedToFeaturesFrom:(id)a1; - (id)unionFeatureProvider; @end