ensure_xml_content

# File lib/rss/maker/base.rb, line 308
        def ensure_xml_content(content)
          xhtml_uri = ::RSS::Atom::XHTML_URI
          unless content.is_a?(RSS::XML::Element) and
              ["div", xhtml_uri] == [content.name, content.uri]
            children = content
            children = [children] unless content.is_a?(Array)
            children = set_xhtml_uri_as_default_uri(children)
            content = RSS::XML::Element.new("div", nil, xhtml_uri,
                                            {"xmlns" => xhtml_uri},
                                            children)
          end
          content
        end