woocommerce_product_options_stock_fields хук-событие . WC 1.0
Использование
add_action( 'woocommerce_product_options_stock_fields', 'action_function_name_2444' );
function action_function_name_2444(){
// action...
}Где вызывается хук
woocommerce_product_options_stock_fields
woocommerce/includes/admin/meta-boxes/views/html-product-data-inventory.php 89
do_action( 'woocommerce_product_options_stock_fields' );