static void config(JSONWriter.Feature... features) {
        for (int i = 0; i < features.length; i++) {
            JSONFactory.defaultWriterFeatures |= features[i].mask;
        }
    }
Enable the specified features in default writer

@param features the specified features to be used
@since 2.0.6
core/src/main/java/com/alibaba/fastjson2/JSON.java