/// <remarks/>
 public void updateAsync(update update1, object userState) {
     if ((this.updateOperationCompleted == null)) {
         this.updateOperationCompleted = new System.Threading.SendOrPostCallback(this.OnupdateOperationCompleted);
     }
     this.InvokeAsync("update", new object[] {
                 update1}, this.updateOperationCompleted, userState);
 }
 /// <remarks/>
 public void updateAsync(update update1) {
     this.updateAsync(update1, null);
 }