FluentDOM\Loader\Json\JsonDOM::getValueAsString PHP Method

    public function getValueAsString($type, $value)
    {
        switch ($type) {
            case self::TYPE_NULL:
                return NULL;
            case self::TYPE_BOOLEAN:
                return $value ? 'true' : 'false';
            default:
                return (string) $value;
        }
    }