public function addCalendar($calendarID, $options = array())
	{
		if ($this->isAuthenticated())
		{
			$options['id'] = $calendarID;
			$url = 'https://www.googleapis.com/calendar/v3/users/me/calendarList';
			$jdata = $this->query($url, json_encode($options), array('Content-type' => 'application/json'), 'post');

			if ($data = json_decode($jdata->body, true))
			{
				return $data;
			}
			else
			{
				throw new UnexpectedValueException("Unexpected data received from Google: `{$jdata->body}`.");
			}
		}
		else
		{
			return false;
		}
	}