toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (dealCode != null) 'dealCode': dealCode!,
if (kind != null) 'kind': kind!,
if (planName != null) 'planName': planName!,
if (purchaseOrderId != null) 'purchaseOrderId': purchaseOrderId!,
if (seats != null) 'seats': seats!,
};