mergeContextDevice function
Implementation
ContextDevice mergeContextDevice(ContextDevice a, ContextDevice b) {
return ContextDevice(a.manufacturer, a.model, a.name, a.type,
adTrackingEnabled: a.adTrackingEnabled ?? b.adTrackingEnabled,
advertisingId: a.advertisingId ?? b.advertisingId,
id: a.id ?? b.id,
token: a.token ?? b.token,
trackingStatus: a.trackingStatus ?? b.trackingStatus);
}