toJson method
Implementation
@override
Object toJson() => {
'location': ?location,
'machineType': ?machineType,
if (preemptionHistory.isNotDefault)
'preemptionHistory': [for (final i in preemptionHistory) i.toJson()],
if (priceHistory.isNotDefault)
'priceHistory': [for (final i in priceHistory) i.toJson()],
};