code: public void onMemberUnblocked(AVIMClient client, AVIMConversation conversation, List<String> members, String operator){
      LOGGER.d("Notification --- " + operator + " unblocked members: " + StringUtil.join(", ", members));
    }
docs: 聊天室成员被移出黑名单通知处理函数
  @param client        聊天客户端
  @param conversation  对话
  @param members       成员列表
  @param operator      操作者 id