public function filterByHasthumbnail($hasthumbnail = null, $comparison = null)
    {
        if (is_string($hasthumbnail)) {
            $hasthumbnail = in_array(strtolower($hasthumbnail), array('false', 'off', '-', 'no', 'n', '0', '')) ? false : true;
        }

        return $this->addUsingAlias(MxmapTableMap::COL_HASTHUMBNAIL, $hasthumbnail, $comparison);
    }