public void getConfig(SlobroksConfig.Builder builder) {
        for (Slobrok slob : slobroks) {
            builder.
                slobrok(new SlobroksConfig.Slobrok.Builder().
                        connectionspec(slob.getConnectionSpec()));
        }
    }
Returns the log server for this, or null if none
config-model/src/main/java/com/yahoo/vespa/model/admin/Admin.java