private Optional<NodeResources> realResources() {
        if (getHostResource() != null) {
            NodeResources nodeResources = getHostResource().realResources();
            if ( ! nodeResources.isUnspecified()) {
                return Optional.of(nodeResources);
            }
        }
        return Optional.empty();
    }
Returns the jvm arguments this should start with
config-model/src/main/java/com/yahoo/vespa/model/container/ApplicationContainer.java