getMetadataConfigurations method Null safety

Future<List<Configuration>> getMetadataConfigurations()

This operation lists all existing metadata configurations. The client need not know anything priori about the metadata in order to use the command.

Implementation

Future<List<Configuration>> getMetadataConfigurations() async {
  loggy.debug('getMetadataConfigurations');

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

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

  return envelope.body.metadataConfigurationsResponse!.configurations;
}