@Override
 public String releaseWriteLock(String name) {
   if (readWriteLockManager.unlockWriteLock(name)) {
     return "success";
   } else {
     return "does not exist";
   }
 }
 @Override
 public Map<String, String> getReadWriteLockData(String name) {
   return readWriteLockManager.getReadWriteLockData(name);
 }
 @Override
 public List<String> getAllReadWriteLocks() {
   return readWriteLockManager.getLockNames();
 }