WC_Admin_Post_Types::update_filename()
Method: Change filename for WooCommerce uploads and prepend unique chars for security.
Source: includes/admin/class-wc-admin-post-types.php:749
WC_Admin_Notices::redirect_download_method_notice()
Method: Notice about Redirect-Only download method.
Source: includes/admin/class-wc-admin-notices.php:500