def desc=(value)
      node = at './desc'
      node ||= add_child Nokogiri::XML::Node.new('desc', document)

      node.content = value
    end
def desc=(value)
      node = at './desc'
      node ||= add_child Nokogiri::XML::Node.new('desc', document)

      node.content = value
    end
Sets description of node.