docs: @SuppressWarnings("unused")
  	@Scheduled(fixedDelay = DateUtils.MILLIS_PER_MINUTE)
  	public void syncSubscriptions() {
  		if (!mySyncSubscriptionsSemaphore.tryAcquire()) {
  			return;
  		}
  		try {
  			doSyncSubscriptionsWithRetry();
  		} finally {
  			mySyncSubscriptionsSemaphore.release();
  		}
  	}