text: /* Generated by RuntimeBrowser
     Image: /System/Library/PrivateFrameworks/SafariShared.framework/SafariShared
   */
  
  @interface WBSPeriodicActivityScheduler : NSObject {
      id /* block */  _block;
      double  _interval;
      bool  _invalidated;
      NSObject<OS_dispatch_queue> * _queue;
      NSTimer * _timer;
  }
  
  - (void).cxx_destruct;
  - (void)_scheduleTimerWithFireInterval:(double)arg1;
  - (void)_timerDidFire:(id)arg1;
  - (id)init;
  - (id)initWithInterval:(double)arg1 minimumDelay:(double)arg2 lastFireDate:(id)arg3 block:(id /* block */)arg4;
  - (void)invalidate;
  
  @end
  