Ouzo\Db\Stats::trace PHP 메소드

    public static function trace($query, $params, $function)
    {
        if (Config::getValue('debug')) {
            return self::traceNoCheck($query, $params, $function);
        }
        return $function();
    }

 public function fetchIterator()
 {
     $obj = $this;
     return Stats::trace($this->_humanizedSql, $this->_boundValues, function () use($obj) {
         $pdoStatement = $obj->_createPdoStatement();
         return new StatementIterator($pdoStatement);
     });
 }