code: public EtcdMembersResponse getMembers() {
      try {
        return new EtcdMembersRequest(this.client,retryHandler).send().get();
      } catch (IOException | EtcdException | EtcdAuthenticationException | TimeoutException e) {
        return null;
      }
    }
docs: Get the Members of Etcd
  
  @return vEtcdMembersResponse