public void Export( 
   Uri outputJsonPath,
   SubnetworkExportOptions subnetworkExportOptions
)

public void ExportSubnetwork(UtilityNetwork utilityNetwork, string subnetworkName, Uri exportResultJsonPath)
{
  using (UtilityNetworkDefinition utilityNetworkDefinition = utilityNetwork.GetDefinition())
  using (SubnetworkManager subnetworkManager = utilityNetwork.GetSubnetworkManager())
  {
    Subnetwork subnetwork = subnetworkManager.GetSubnetwork(subnetworkName);

    IReadOnlyList<NetworkAttribute> networkAttributes = utilityNetworkDefinition.GetNetworkAttributes();
    IReadOnlyList<NetworkSource> networkSources = utilityNetworkDefinition.GetNetworkSources();

    NetworkSource electricDevice = networkSources.First(f => f.Name.Contains("ElectricDevice"));

    // Export options
    SubnetworkExportOptions subnetworkExportOptions = new SubnetworkExportOptions()
    {
      SetAcknowledged = false,
      IncludeDomainDescriptions = true,
      IncludeGeometry = true,
      ServiceSynchronizationType = ServiceSynchronizationType.Asynchronous,

      SubnetworkExportResultTypes = new List<SubnetworkExportResultType>()
      {
        SubnetworkExportResultType.Connectivity,
        SubnetworkExportResultType.Features
      },

      ResultNetworkAttributes = new List<NetworkAttribute>(networkAttributes),

      ResultFieldsByNetworkSourceID = new Dictionary<int, List<string>>()
        { { electricDevice.ID, new List<string>() { "AssetID" } } }
    };


    subnetwork.Export(exportResultJsonPath, subnetworkExportOptions);
  }
}