public IRoyalty ToRoyalty()
{
return(RoyaltyType switch
{
RoyaltyType.Fixed => new FixedRoyalty(Account !, Token ?? Address.None, FixedAmount.GetValueOrDefault()),
RoyaltyType.Token => new TokenRoyalty(Account !, Numerator.GetValueOrDefault(), Denominator.GetValueOrDefault(), Minimum.GetValueOrDefault(), Maximum.GetValueOrDefault(), AssessAsSurcharge),
RoyaltyType.Asset => new AssetRoyalty(Account !, Numerator.GetValueOrDefault(), Denominator.GetValueOrDefault(), FallbackAmount.GetValueOrDefault(), FallbackToken ?? Address.None),
_ => throw new ArgumentOutOfRangeException("Unsupported Royalty Type"),
});
