public static function webappPrefixTooShort(string $str)
    {
        $length = strlen($str);
        if ($length === 0) {
            return new self(sprintf(
                'The WebApp Prefix must be at least 3 characters. You supplied an empty Prefix.'
            ));
        } else {
            return new self(sprintf(
                'The WebApp Prefix must be at least 3 characters. You supplied a %s character Prefix: %s',
                $length,
                $str
            ));
        }
    }