SslContextBuilder withCaCertificates(Path caCertificates) {
        this.caCertificatesFile = caCertificates;
        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