code: public void importModule() {
  
          Window window = CmsBasicDialog.prepareWindow(DialogWidth.wide);
          CmsImportTabForm form = new CmsImportTabForm(m_app, this::reload);
          window.setContent(form);
          window.setCaption(CmsVaadinUtils.getMessageText(Messages.GUI_MODULES_IMPORT_TITLE_0));
          A_CmsUI.get().addWindow(window);
          window.center();
      }
docs: Opens the import module dialog.<p>