@class NSString; @interface ActivityUIServices.ActivityUpdateProvider : NSObject <ActivityUIServices.ActivityUpdateProviding> { void /* unknown type, empty encoding */ activityIdentifier; void /* unknown type, empty encoding */ activityDescriptor; void /* unknown type, empty encoding */ systemMetricsRequest; } @property (nonatomic) void /* unknown type, empty encoding */ activityState; @property (nonatomic, retain) void /* unknown type, empty encoding */ descriptor; @property (nonatomic, readonly) NSString *identifier; - (id)init; - (void).cxx_destruct; - (id)initWithActivityDescriptor:(id)a0 activityState:(long long)a1 systemMetricsRequest:(id)a2; @end