}
        final String authorities = fessConfig.getFesenHttpSslCertificateAuthorities();
        if (StringUtil.isNotBlank(authorities)) {
            builder.put("http.ssl.certificate_authorities", authorities);
        }
        return new HttpClient(builder.build(), null);
    }

        final String authorities = fessConfig.getFesenHttpSslCertificateAuthorities();
        if (StringUtil.isNotBlank(authorities)) {
            if (logger.isDebugEnabled()) {
                logger.debug("Loading certificate_authorities: {}", authorities);
            }
            try (final InputStream in = new FileInputStream(authorities)) {
                final Certificate certificate = CertificateFactory.getInstance("X.509").generateCertificate(in);

#
# The title of domain the application for logging
domain.title = Fess

# Search Engine
search_engine.type=default
search_engine.http.url=http://localhost:9201
search_engine.http.ssl.certificate_authorities=
search_engine.username=
search_engine.password=
search_engine.heartbeat_interval=10000

# Cryptographer
app.cipher.algorism=aes
app.cipher.key=___change__me___
app.digest.algorism=sha256

        final String value = getSearchEngineHttpSslCertificateAuthorities();
        if (value != null) {
            return value;
        }
        return get("elasticsearch.http.ssl.certificate_authorities");
    }

    String getSearchEngineUsername();

    default String getFesenUsername() {
        final String value = getSearchEngineUsername();
        if (value != null) {

        }
        final String authorities = fessConfig.getFesenHttpSslCertificateAuthorities();
        if (StringUtil.isNotBlank(authorities)) {
            builder.put("http.ssl.certificate_authorities", authorities);
        }
        return new HttpClient(builder.build(), null);
    }

    public boolean existsIndex(final String indexName) {

// incur a significant performance cost.
func (chi *ClientHelloInfo) SupportsCertificate(c *Certificate) error {
	// Note we don't currently support certificate_authorities nor
	// signature_algorithms_cert, and don't check the algorithms of the
	// signatures on the chain (which anyway are a SHOULD, see RFC 8446,
	// Section 4.4.2.2).

	config := chi.config

	// Certificates holds a list of certificates to show expiration information for.
	Certificates []Certificate `json:"certificates"`

	// CertificateAuthorities holds a list of certificate authorities to show expiration information for.
	CertificateAuthorities []Certificate `json:"certificateAuthorities"`

		in, out := &in.Certificates, &out.Certificates
		*out = make([]Certificate, len(*in))
		for i := range *in {
			(*in)[i].DeepCopyInto(&(*out)[i])
		}
	}
	if in.CertificateAuthorities != nil {
		in, out := &in.CertificateAuthorities, &out.CertificateAuthorities
		*out = make([]Certificate, len(*in))
		for i := range *in {
			(*in)[i].DeepCopyInto(&(*out)[i])
		}
	}
	return
}

		in, out := &in.Certificates, &out.Certificates
		*out = make([]Certificate, len(*in))
		for i := range *in {
			(*in)[i].DeepCopyInto(&(*out)[i])
		}
	}
	if in.CertificateAuthorities != nil {
		in, out := &in.CertificateAuthorities, &out.CertificateAuthorities
		*out = make([]Certificate, len(*in))
		for i := range *in {
			(*in)[i].DeepCopyInto(&(*out)[i])
		}
	}
	return
}

	metav1.TypeMeta

	// Certificates holds a list of certificates to show expiration information for.
	Certificates []Certificate

	// CertificateAuthorities holds a list of certificate authorities to show expiration information for.
	CertificateAuthorities []Certificate