/** * Load collection * * @param bool $printQuery * @param bool $logQuery * @return $this */ public function load($printQuery = false, $logQuery = false) { if ($this->isLoaded()) { return $this; } parent::load($printQuery, $logQuery); $this->_setIsLoaded(); if ($this->_columnGroupBy !== null) { $this->_mergeWithEmptyData(); $this->_groupResourceData(); } return $this; }