ins.addClickHandler( new ClickHandler() {
            public void onClick(ClickEvent event) {
                if ( !Window.confirm( constants.AboutToInstallSampleRepositoryAreYouSure() ) ) return;
                LoadingPopup.showMessage( constants.ImportingAndProcessing() );
                ModuleServiceAsync moduleService = GWT.create(ModuleService.class);
                moduleService.installSampleRepository(new GenericCallback<java.lang.Void>() {
                                public void onSuccess(Void v) {
                                    Window.alert(constants.RepositoryInstalledSuccessfully());
                                    hide();
                                    Window.Location.reload();
                                }