The source node in most cases contains the sample message as written by the developer. If it looks like a dot-delimitted string such as "form.label.firstname", then the developer has not provided a default message.

Commerce E-commerce key: main__commerce Shipments Dostawy key: main__commerce__shipments Shipping methods Metody wysyłki key: main__commerce__shipping_methods Delete Usuń key: shipping_method_view__context_menu__delete Edit Edytuj key: shipping_method_view__context_menu__edit