toJson method
Implementation
Map<String, dynamic> toJson() {
final bluetooth = this.bluetooth;
final gps = this.gps;
final nfc = this.nfc;
final wifi = this.wifi;
return {
if (bluetooth != null) 'bluetooth': bluetooth,
if (gps != null) 'gps': gps,
if (nfc != null) 'nfc': nfc,
if (wifi != null) 'wifi': wifi,
};
}