public async Task InitializeAsync()
        {
            if (((App)App.Current).CurrentIntrataApiClient == null && ((App)App.Current).SettingApp.IntrataApiServer != null)
            {
                ((App)App.Current).CurrentIntrataApiClient = new IntrataApiClient(((App)App.Current).SettingApp.IntrataApiServer);
            }

            var api = ((App)App.Current).CurrentIntrataApiClient;
            List <InstallationBase> linstalls = await api.GetCollectionsAsync <InstallationBase>(null, ApiServices.ApiInstallation(), false, "", RestSharp.Portable.Method.GET);

            Installations = new ObservableCollection <InstallationViewModel>(linstalls.Select(e => new InstallationViewModel(e)));
        }