    # File lib/action_view/helpers/translation_helper.rb, line 6
          def translate(key, options = {})
            options[:raise] = true
            I18n.translate(key, options)
          rescue I18n::MissingTranslationData => e
            keys = I18n.send(:normalize_translation_keys, e.locale, e.key, e.options[:scope])
            content_tag('span', keys.join(', '), :class => 'translation_missing')
          end