if (!external) {
            disableExternalResources(schemaFactory);
        }
        return schemaFactory;
    }

    /**
     * RELAX NGのための{@link SchemaFactory}を生成します。
     *
     * @return RELAX NGのための{@link SchemaFactory}
     */
    public static SchemaFactory newRelaxNgSchemaFactory() {
        return newRelaxNgSchemaFactory(false);
    }