/// <remarks/>
 public void GetShippingCostsAsync(GetShippingCostsRequestType GetShippingCostsRequest, object userState) {
     if ((this.GetShippingCostsOperationCompleted == null)) {
         this.GetShippingCostsOperationCompleted = new System.Threading.SendOrPostCallback(this.OnGetShippingCostsOperationCompleted);
     }
     this.InvokeAsync("GetShippingCosts", new object[] {
                 GetShippingCostsRequest}, this.GetShippingCostsOperationCompleted, userState);
 }
 /// <remarks/>
 public void GetShippingCostsAsync(GetShippingCostsRequestType GetShippingCostsRequest) {
     this.GetShippingCostsAsync(GetShippingCostsRequest, null);
 }