WordPress at a glance
action is not described

woocommerce_update_options_(id)_classes action-hook . WC 1.0

Usage

add_action( 'woocommerce_update_options_(id)_classes', 'action_function_name_6225' );
function action_function_name_6225(){
	// action...
}

Where the hook is called

WC_Settings_Shipping::save()
woocommerce_update_options_(id)_classes
woocommerce/includes/admin/settings/class-wc-settings-shipping.php 189
do_action( 'woocommerce_update_options_' . $this->id . '_classes' );

Where in WP core the hook is used WooCommerce

Usage not found.