def METHOD_NAME():
    def new_init(self, *args, **kwargs):
        super(ShippingAddressForm, self).__init__(*args, **kwargs)
    ShippingAddressForm.__init__ = new_init
    data = {
        "first_name": "John",
        "last_name": "Doe",
        "line1": "1 Egg Road",
        "line4": "Shell City",
        "postcode": "N12 9RT",
        "phone_number": "+49231555555",
    }
    form = ShippingAddressForm(data)
    form.is_valid()
    address_fields = dict(
        (k, v) for (k, v) in form.instance.__dict__.items() if not k.startswith("_")
    )
    return address_fields