@Override
    public ArmeriaResteasyClientBuilder trustStore(KeyStore trustStore) {
        delegate.trustStore(trustStore);
        return this;
    }
Armeria does not allow to access the ssl-context from WebClient API.
This functionality must be achieved by configuring {@link com.linecorp.armeria.client.WebClientBuilder}.
@throws UnsupportedOperationException always
resteasy/src/main/java/com/linecorp/armeria/client/resteasy/ArmeriaResteasyClientBuilder.java