code: public void syncRecentContact(List<Account> contactList) {
          if (null != contactList && contactList.size() > 0) {
              for (Account account : contactList) {
                  accountMap.put(account.getUserName(), account);
              }
          }
      }
docs: 同步最近联系人
  <p>
  避免新建群聊无法同步
  
  @param contactList 联系人列表