code: public function saveAfterLoading($datas, array $identifier = array(), $shardingKey = null, &$affectedRows = null)
      {
          return $this->save($datas, $identifier, $shardingKey, $affectedRows);
      }
docs: @param array $datas
  @param array $identifier
  @param null  $shardingKey
  @param null  $affectedRows
  
  @return int