SslContextBuilder withCertificateAndKey(Path certificate, Path privateKey) {
        this.certificateFile = certificate;
        this.privateKeyFile = privateKey;
        return this;
    }
BouncyCastle integration for creating a {@link SSLContext} instance from PEM encoded material

@author bjorncs
vespa-feed-client/src/main/java/ai/vespa/feed/client/impl/SslContextBuilder.java