public static function save( $fileName, $channelData, $itemList, $encoding = "utf-8" )
	{
		$builder	= new XML_RSS_Builder();
		$builder->setChannelData( $channelData );
		$builder->setItemList( $itemList );
		$xml	= $builder->build( $encoding = "utf-8" );
		return FS_File_Writer::save( $fileName, $xml );
	}