toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (expectedNewPriceChargeTime != null)
'expectedNewPriceChargeTime': expectedNewPriceChargeTime!,
if (newPrice != null) 'newPrice': newPrice!,
if (priceChangeMode != null) 'priceChangeMode': priceChangeMode!,
if (priceChangeState != null) 'priceChangeState': priceChangeState!,
};