docs: def preview(file):
      """Render appropiate template with embed flag."""
      file_info = validate_csv(file)
      return render_template(
          'invenio_previewer/csv_bar.html',
          file=file,
          delimiter=file_info['delimiter'],
          encoding=file_info['encoding'],
          js_bundles=current_previewer.js_bundles + ['previewer_csv_js'],
          css_bundles=current_previewer.css_bundles,
      )