/** Get the RDF serialiser object used to generate RDF data
*
* If no RDF Serialiser has previously been set, then a new
* default (EasyRdf_Serialiser_Builtin) serialiser will be created.
*
* @return object mixed The RDF serialiser object
*/
public static function getRdfSerialiser()
{
if (!self::$_rdfSerialiser) {
require_once "EasyRdf/Serialiser/Builtin.php";
self::$_rdfSerialiser = new EasyRdf_Serialiser_Builtin();
}
return self::$_rdfSerialiser;
}
