def alternate_values_list_tag(object)
    return nil unless object.has_alternate_values? && object.alternate_values.any?
    content_tag(:h3, 'Alternate values') +
      content_tag(:ul, class: 'annotations__alternate_value_list') do
        object.alternate_values.collect { |a| content_tag(:li, alternate_value_annotation_tag(a)) }.join.html_safe