/// <remarks/>
 public void addGroupAsync(AddRequestType addRequest, object userState) {
     if ((this.addGroupOperationCompleted == null)) {
         this.addGroupOperationCompleted = new System.Threading.SendOrPostCallback(this.OnaddGroupOperationCompleted);
     }
     this.InvokeAsync("addGroup", new object[] {
                 addRequest}, this.addGroupOperationCompleted, userState);
 }
 /// <remarks/>
 public void addGroupAsync(AddRequestType addRequest) {
     this.addGroupAsync(addRequest, null);
 }