NSHandler
GObject ╰── NSHandler
NSHandler * ns_handler_new ();
gboolean ns_handler_channel (NSHandler *handler, GrssFeedChannel *feed, xmlNodePtr cur);
NSHandler *handler
GrssFeedChannel *feed
xmlNodePtr cur
gboolean ns_handler_item (NSHandler *handler, GrssFeedItem *item, xmlNodePtr cur);
GrssFeedItem *item
#define NS_HANDLER_TYPE (ns_handler_get_type())