def METHOD_NAME(self, **kwargs):
    good_kwargs = dict(
        # these together would update
        submission__registration_status=RegistrationStatuses.success,
        submission__pre_registration_completed=True,
        submission__form__registration_backend="registration1",
        submission__form__payment_backend="payment1",
        submission__form__product__price=Decimal("11.35"),
        status=PaymentStatus.completed,
        plugin_id="payment1",  # not used but added for completion
    )
    good_kwargs.update(kwargs)
    return SubmissionPaymentFactory.create(**good_kwargs)