<distribution>repo</distribution>
		</license>
	</licenses>
	<organization>
		<name>CodeLibs</name>
		<url>https://fess.codelibs.org/</url>
	</organization>
	<developers>
		<developer>
			<id>shinsuke</id>
			<name>Shinsuke Sugaya</name>
			<email>******@****.***</email>
			<organization>CodeLibs Inc.</organization>
			<organizationUrl>https://codelibs.co</organizationUrl>
		</developer>

	if err != nil {
		return nil, nil, fmt.Errorf("failed to generate serial number: %w", err)
	}

	template := x509.Certificate{
		SerialNumber: serialNumber,
		Subject: pkix.Name{
			Organization: []string{"Acme Co"},
		},
		NotBefore: notBefore,
		NotAfter:  notAfter,

		KeyUsage:              x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,