@Override
  public Set shutDownAllMembers(long timeout) throws AdminException {
    connectAdminDS();
    DistributionManager dm = getDistributionManager();
    if (dm == null) {
      throw new IllegalStateException(
          "connect() has not been invoked on this AdminDistributedSystem.");
    }
    return shutDownAllMembers(dm, timeout);
  }
@deprecated use {@link #revokePersistentMember(UUID)} instead
geode-core/src/main/java/org/apache/geode/admin/internal/AdminDistributedSystemImpl.java