System/Library/PrivateFrameworks/PromotedContentSupport.framework
PCRingBuffer.h
@class NSMutableArray, APUnfairLock;
@interface PCRingBuffer : NSObject
@property (retain, nonatomic) NSMutableArray *ringBuffer;
@property (readonly, nonatomic) APUnfairLock *lock;
+ (id)sharedInstance;
- (id)init;
- (void).cxx_destruct;
- (void)cappedRingBufferTo:(unsigned long long)a0;
@end