@class NFUnfairLock;
@interface FCOnce : NSObject {
BOOL _finished;
NFUnfairLock *_lock;
}
- (id)init;
- (BOOL)trigger;
- (BOOL)hasBeenTriggered;
- (void).cxx_destruct;
- (id)initWithOptions:(unsigned long long)a0;
- (void)executeOnce:(id /* block */)a0;
@end