getAudioSources method Null safety

Future<List<AudioSource>> getAudioSources()

This command lists all available physical audio inputs of the device.

Implementation

Future<List<AudioSource>> getAudioSources() async {
  loggy.debug('getAudioSources');

  // Future<void> getAudioSources() async {
  final envelope = await Soap.retrieveEnvelope(
      uri, onvif.secureRequest(SoapRequest.audioSources()));

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

  return envelope.body.audioSourcesResponse!.audioSources;
}