SimplePie::get_longitude

		}

		if (isset($this->data['headers']['link']) &&
		    preg_match('/<([^>]+)>; rel='.preg_quote($rel).'/',
		               $this->data['headers']['link'], $match))
		{
			return array($match[1]);
		}
		else if (isset($this->data['links'][$rel]))
		{
			return $this->data['links'][$rel];
		}

		return null;
	}

	public function get_all_discovered_feeds()
	{
		return $this->all_discovered_feeds;