public Optional<EndpointCertificateSecrets> readEndpointCertificateSecrets(EndpointCertificateMetadata metadata) {
        return Optional.of(readFromSecretStore(metadata));
    }
Used to retrieve actual endpoint certificate/key from secret store.

@author andreer
configserver/src/main/java/com/yahoo/vespa/config/server/tenant/EndpointCertificateRetriever.java