/// <remarks/>
 public void modifyGroupAsync(ModifyRequestType modifyRequest, object userState) {
     if ((this.modifyGroupOperationCompleted == null)) {
         this.modifyGroupOperationCompleted = new System.Threading.SendOrPostCallback(this.OnmodifyGroupOperationCompleted);
     }
     this.InvokeAsync("modifyGroup", new object[] {
                 modifyRequest}, this.modifyGroupOperationCompleted, userState);
 }
 /// <remarks/>
 public void modifyGroupAsync(ModifyRequestType modifyRequest) {
     this.modifyGroupAsync(modifyRequest, null);
 }