code: public ReentrantLock newReentrantLock(String lockName, boolean fair) {
      return policy == Policies.DISABLED
          ? new ReentrantLock(fair)
          : new CycleDetectingReentrantLock(new LockGraphNode(lockName), fair);
    }
docs: Creates a {@link ReentrantLock} with the given fairness policy. The {@code lockName} is used in
  the warning or exception output to help identify the locks involved in the detected deadlock.