protected function isParentItem($line)
	{
		if ($this->_listDepth === 1 || ($marker = $line[0]) !== '*' && $marker !== '#') {
			return false;
		}
		$depthMax = $this->_listDepth - 1;
		if (preg_match('/^(#{1,' . $depthMax . '})[^#]+/', $line, $matches)) {
			return $this->_nestedListTypes[strlen($matches[1])] === 'ol';
		}
		if (preg_match('/^(\*{1,' . $depthMax . '})[^\*]+/', $line, $matches)) {
			return $this->_nestedListTypes[strlen($matches[1])] === 'ul';
		}
		return false;
	}