docs: public synchronized void unlockExclusive()
    {
      if (tc.isEntryEnabled())
        SibTr.entry(tc, "unlockExclusive", this);
  
      // Synchronize on the locking Mutex.
      synchronized (iMutex)
      {
        // Only release the lock if the holder is the current thread.
        if (Thread.currentThread() == iExclusiveLockHolder)
        {
          if (tc.isDebugEnabled())
            SibTr.debug(tc, "Unlocking current thread " + (iExclusiveLockCount - 1));
  
          // Decrement the exclusive lock count,
          // if the count reaches 0 then we know that 
          // we can safely remove the exclusive lock
          if (--iExclusiveLockCount == 0)
          {
            // Set the flag to indicate that the exclusive lock
            // has been released.
            iExclusivelyLocked = false;
  
            // Set the exclusive lock holder thread to be null
            iExclusiveLockHolder = null;
  
            // Notify any threads waiting for this lock.
            notifyAll();
          }
        }
        else if (tc.isDebugEnabled())
          SibTr.debug(tc, "Thread not the current thread to unlock exclusively");
      }
  
      if (tc.isEntryEnabled())
        SibTr.exit(tc, "unlockExclusive");
  
    }