/// <remarks/>
 public void lookupGroupAsync(LookupRequestType lookupRequest, object userState) {
     if ((this.lookupGroupOperationCompleted == null)) {
         this.lookupGroupOperationCompleted = new System.Threading.SendOrPostCallback(this.OnlookupGroupOperationCompleted);
     }
     this.InvokeAsync("lookupGroup", new object[] {
                 lookupRequest}, this.lookupGroupOperationCompleted, userState);
 }
 /// <remarks/>
 public void lookupGroupAsync(LookupRequestType lookupRequest) {
     this.lookupGroupAsync(lookupRequest, null);
 }