empty_content?

# File activesupport/lib/active_support/xml_mini/jdom.rb, line 163
      def empty_content?(element)
        text = +""
        child_nodes = element.child_nodes
        (0...child_nodes.length).each do |i|
          item = child_nodes.item(i)
          if item.node_type == Node::TEXT_NODE
            text << item.get_data.strip
          end
        end
        text.strip.length == 0
      end