/// <remarks/>
 public void BillAgreementUpdateAsync(BillAgreementUpdateReq BillAgreementUpdateReq, object userState) {
     if ((this.BillAgreementUpdateOperationCompleted == null)) {
         this.BillAgreementUpdateOperationCompleted = new System.Threading.SendOrPostCallback(this.OnBillAgreementUpdateOperationCompleted);
     }
     this.InvokeAsync("BillAgreementUpdate", new object[] {
                 BillAgreementUpdateReq}, this.BillAgreementUpdateOperationCompleted, userState);
 }
 /// <remarks/>
 public void BillAgreementUpdateAsync(BillAgreementUpdateReq BillAgreementUpdateReq) {
     this.BillAgreementUpdateAsync(BillAgreementUpdateReq, null);
 }