void ClearLicense(
	LicenseType licenseType,
	Guid serviceID
)

Sub ClearLicense ( 
	licenseType As LicenseType,
	serviceID As Guid
)

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using QMSAPI;

class Program
{
     static void Main(string[] args)
     {
         try
         { 
             // create a QMS API client
             IQMS apiClient = new QMSClient();

             //retrieve a time limited service key
             ServiceKeyClientMessageInspector.ServiceKey = apiClient.GetTimeLimitedServiceKey();

             //Find a QlikView Server service.
             ServiceInfo qlikViewServiceInfo = apiClient.GetServices(ServiceTypes.QlikViewServer).FirstOrDefault();
             if( qlikViewServiceInfo != null) {
                 apiClient.ClearLicense(LicenseType.QlikViewServer, qlikViewServiceInfo.ID);
             }
         }
         catch (Exception ex)
         {
             Console.WriteLine("An exception occurred: " + ex.Message);
         }
         // wait for user to press any key
         Console.ReadLine();
     }
}