/*
 *  call-seq:
 *    namespace()
 *
 *  returns the default namespace set on this node (as with an "xmlns="
 *  attribute), as a Namespace object.
 */
static VALUE namespace(VALUE self)
{
  xmlNodePtr node ;
  Data_Get_Struct(self, xmlNode, node);

  if (node->ns)
    return Nokogiri_wrap_xml_namespace(node->doc, node->ns);

  return Qnil ;
}