/// <remarks/>
 public void DeleteOneContactAsync(DeleteOneContactRequestType DeleteOneContactRequest, object userState) {
     if ((this.DeleteOneContactOperationCompleted == null)) {
         this.DeleteOneContactOperationCompleted = new System.Threading.SendOrPostCallback(this.OnDeleteOneContactOperationCompleted);
     }
     this.InvokeAsync("DeleteOneContact", new object[] {
                 DeleteOneContactRequest}, this.DeleteOneContactOperationCompleted, userState);
 }
 /// <remarks/>
 public void DeleteOneContactAsync(DeleteOneContactRequestType DeleteOneContactRequest) {
     this.DeleteOneContactAsync(DeleteOneContactRequest, null);
 }