protected function _addRefItems( array $entry, $id )
	{
		if( isset( $entry['stock'] ) ) {
			$this->_addProductStock( $id, $entry['stock'] );
		}

		if( isset( $entry['attribute'] ) ) {
			$this->_addAttributes( $id, $entry['attribute'], 'product' );
		}

		if( isset( $entry['media'] ) ) {
			$this->_addMedia( $id, $entry['media'], 'product' );
		}

		if( isset( $entry['price'] ) ) {
			$this->_addPrices( $id, $entry['price'], 'product' );
		}

		if( isset( $entry['text'] ) ) {
			$this->_addTexts( $id, $entry['text'], 'product' );
		}

		if( isset( $entry['product'] ) ) {
			$this->_addProducts( $id, $entry['product'], 'product' );
		}
	}