@Override
    public void getConfig(ContainerDocumentConfig.Builder builder) {
        for (Map.Entry<String, String> e : concreteDocumentTypes.entrySet()) {
            ContainerDocumentConfig.Doctype.Builder dtb = new ContainerDocumentConfig.Doctype.Builder();
            dtb.type(e.getKey());
            dtb.factorycomponent(e.getValue());
            builder.doctype(dtb);
        }
    }
Returns all components in this cluster (generic, handlers, chained)
config-model/src/main/java/com/yahoo/vespa/model/container/ContainerCluster.java