item object
		$order_items = $order->get_items();
		foreach ($order_items as $order_item_id => $order_item) {
			if ($order_item_id == $item_id) {
				if ( wc_cp_is_composited_order_item( $order_item, $order ) ) {
					$classes .= ' component_table_item';
				} elseif ( wc_cp_is_composite_container_order_item( $order_item ) ) {
					$classes .= ' component_container_table_item';
				}
				break;
			}
		}

		return $classes;
	}

	/**
	 * Backwards compatibility helper function: try to get item ID from row class
	 * @param string $classes       CSS classes for item row (tr) 
	 */
	public function get_item_id_from_classes ( $classes ) {
		$class_array = explode(' ', $classes);
		foreach ($class_array as $class) {
			if (is_numeric($class)) {
				$item_id = $class;
				break;
			}
		}

		// if still empty, we lost the item id somewhere :(
		if (empty($item_id)) {
			return false;
		} else {
			return $item_id;
		}
	}

	/**
	 * WooCommerce Order Status & Actions Manager emails compatibility
	 */
	public function wc_order_status_actions_emails ( $emails ) {
		// get list of custom statuses from WooCommerce Custom Order Status & Actions
		// status slug => status name
		$custom_statuses = \WC_Custom_Status::get_status_list_names();
		// append _email to slug (=email_id) and add to emails list
		foreach ($custom_statuses as $status_slug => $status_name) {
			$emails[$status_slug.'_email'] = $status_name;
		}
		return $emails;
	}


	/**
	 * Aelia Currency Switcher compatibility
	 * Applies decimal & Thousand separator settings
	 */
	function aelia_currency_formatting( $document_type, $document ) {
		add_filter( 'wc_price_args', array( $this, 'aelia_currency_price_args' ), 10, 1 );
	}

	function aelia_currency_price_args( $args ) {
		if ( !empty( $args['currency'] ) && class_exists("\\Aelia\\WC\\CurrencySwitcher\\WC_Aelia_CurrencySwitcher") ) {
			$cs_settings = \Aelia\WC\CurrencySwitcher\WC_Aelia_CurrencySwitcher::settings();
			$args['decimal_separator'] = $cs_settings->get_currency_decimal_separator( $args['currency'] );
			$args['thousand_separator'] = $cs_settings->get_currency_thousand_separator( $args['currency'] );
		}
		return $args;
	}

	/**
	 * Avoid double images from German Market: remove filter
	 */
	function remove_wgm_thumbnails( $document_type, $document ) {
		remove_filter( 'woocommerce_order_item_name', array( 'WGM_Product', 'add_thumbnail_to_order' ), 100, 3 );
	}

	/**
	 * Restore above
	 */
	function restore_wgm_thumbnails( $document_type, $document ) {
		if ( is_callable( array( 'WGM_Product', 'add_thumbnail_to_order' ) ) && get_option( 'german_market_product_images_in_order', 'off' ) == 'on' ) {
			add_filter( 'woocommerce_order_item_name', array( 'WGM_Product', 'add_thumbnail_to_order' ), 100, 3 );
		}
	}
}


endif; // Class exists check