public static function create_roles() {
		global $wp_roles;

		if ( ! class_exists( 'WP_Roles' ) ) {
			return;
		}

		if ( ! isset( $wp_roles ) ) {
			$wp_roles = new WP_Roles(); // @codingStandardsIgnoreLine
		}

		// Dummy gettext calls to get strings in the catalog.
		/* translators: user role */
		_x( 'Customer', 'User role', 'woocommerce' );
		/* translators: user role */
		_x( 'Shop manager', 'User role', 'woocommerce' );

		// Customer role.
		add_role(
			'customer',
			'Customer',
			array(
				'read' => true,
			)
		);

		// Shop manager role.
		add_role(
			'shop_manager',
			'Shop manager',
			array(
				'level_9'                => true,
				'level_8'                => true,
				'level_7'                => true,
				'level_6'                => true,
				'level_5'                => true,
				'level_4'                => true,
				'level_3'                => true,
				'level_2'                => true,
				'level_1'                => true,
				'level_0'                => true,
				'read'                   => true,
				'read_private_pages'     => true,
				'read_private_posts'     => true,
				'edit_posts'             => true,
				'edit_pages'             => true,
				'edit_published_posts'   => true,
				'edit_published_pages'   => true,
				'edit_private_pages'     => true,
				'edit_private_posts'     => true,
				'edit_others_posts'      => true,
				'edit_others_pages'      => true,
				'publish_posts'          => true,
				'publish_pages'          => true,
				'delete_posts'           => true,
				'delete_pages'           => true,
				'delete_private_pages'   => true,
				'delete_private_posts'   => true,
				'delete_published_pages' => true,
				'delete_published_posts' => true,
				'delete_others_posts'    => true,
				'delete_others_pages'    => true,
				'manage_categories'      => true,
				'manage_links'           => true,
				'moderate_comments'      => true,
				'upload_files'           => true,
				'export'                 => true,
				'import'                 => true,
				'list_users'             => true,
				'edit_theme_options'     => true,
			)
		);

		$capabilities = self::get_core_capabilities();

		foreach ( $capabilities as $cap_group ) {
			foreach ( $cap_group as $cap ) {
				$wp_roles->add_cap( 'shop_manager', $cap );
				$wp_roles->add_cap( 'administrator', $cap );
			}
		}
	}