code: public function moveUsers(array $openIds, $groupId)
      {
          $params = [
                     'openid_list' => $openIds,
                     'to_groupid' => $groupId,
                    ];
  
          return $this->parseJSON('json', [self::API_MEMBER_BATCH_UPDATE, $params]);
      }
docs: Batch move users to a group.
  
  @param array $openIds
  @param int   $groupId
  
  @return \EasyWeChat\Support\Collection