protected function getAppropriateConstValue($prefixFrom, $constName)
    {
        $prefixTo  = $prefixFrom === self::PREFIX_DB ? self::PREFIX_HUMAN : self::PREFIX_DB;
        $count     = 1;
        $constName = str_replace($prefixFrom, $prefixTo, $constName, $count);

        return constant('static::'.$constName);
    }