    /*
     * call-seq:
     *  children
     *
     * Get the list of children for this node as a NodeSet
     */
    static VALUE children(VALUE self)
    {
      xmlNodePtr node;
      Data_Get_Struct(self, xmlNode, node);

      xmlNodePtr child = node->children;
      xmlNodeSetPtr set = xmlXPathNodeSetCreate(child);

      if(!child) return Nokogiri_wrap_xml_node_set(set);

      child = child->next;
      while(NULL != child) {
        xmlXPathNodeSetAdd(set, child);
        child = child->next;
      }

      VALUE node_set = Nokogiri_wrap_xml_node_set(set);
      rb_iv_set(node_set, "@document", DOC_RUBY_OBJECT(node->doc));

      return node_set;
    }