getServiceCapabilities method Null safety

Future<DeviceServiceCapabilities> getServiceCapabilities()

Returns the capabilities of the device service. The result is returned in a typed answer.

Implementation

Future<DeviceServiceCapabilities> getServiceCapabilities() async {
  loggy.debug('getServiceCapabilities');

  final envelope = await Soap.retrieveEnvelope(
      uri, onvif.secureRequest(SoapRequest.serviceCapabilities()));

  if (envelope.body.serviceCapabilitiesResponse == null) throw Exception();

  return envelope.body.serviceCapabilitiesResponse!.capabilities;
}