public void getConfig(AttributesConfig.Builder builder) {
        getConfig(builder, AttributeFields.FieldSet.ALL);
    }
Exports a complete set of configuration-server format config files.

@param toDirectory  the directory to export to, current dir if null
@throws IOException if exporting fails, some files may still be created
config-model/src/main/java/com/yahoo/schema/derived/DerivedConfiguration.java