Payment Refunded event

payment_refunded.py

class PaymentRefunded(DomainEvent):
    def __init__(self, aggregate_id: str, amount_refunded: float, refund_id: str, occurred_at: str = datetime.utcnow().isoformat()):
        super().__init__(aggregate_id, occurred_at)
        self.amount_refunded = amount_refunded
        self.refund_id = refund_id