/// <summary>
/// Declines payment with a reason.
/// </summary>
/// <param name="reason"></param>
public void Decline(string reason)
{
Status = PaymentStatus.Declined;
Events.Enqueue(new PaymentDeclined(Id, reason));
}
/// <summary>
/// Approves a payment.
/// </summary>
public void Approve()
{
Status = PaymentStatus.Approved;
Events.Enqueue(new PaymentApproved(Id));
}