toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (currentLegacySkuId != null)
'currentLegacySkuId': currentLegacySkuId!,
if (minimumTransferableSeats != null)
'minimumTransferableSeats': minimumTransferableSeats!,
if (transferabilityExpirationTime != null)
'transferabilityExpirationTime': transferabilityExpirationTime!,
};