/// <remarks/>
 public void SessionLogoutAsync(SessionLogoutRequestType SessionLogoutRequest, object userState) {
     if ((this.SessionLogoutOperationCompleted == null)) {
         this.SessionLogoutOperationCompleted = new System.Threading.SendOrPostCallback(this.OnSessionLogoutOperationCompleted);
     }
     this.InvokeAsync("SessionLogout", new object[] {
                 SessionLogoutRequest}, this.SessionLogoutOperationCompleted, userState);
 }
 /// <remarks/>
 public void SessionLogoutAsync(SessionLogoutRequestType SessionLogoutRequest) {
     this.SessionLogoutAsync(SessionLogoutRequest, null);
 }