public String[] getMemberNames() {
    Iterator<LockServiceMXBean> it = mapOfProxy.values().iterator();
    if (it != null) {
      while (it.hasNext()) {
        String[] memberNames = it.next().getMemberNames();
        return memberNames;
      }

    }
    return ManagementConstants.NO_DATA_STRING;
  }
@return list of members using this lock service
geode-core/src/main/java/org/apache/geode/management/internal/beans/DistributedLockServiceBridge.java