@Override
    public void write(Object o, Type type, MediaType contentType, HttpOutputMessage outputMessage) throws IOException, HttpMessageNotWritableException {
        // support StreamingHttpOutputMessage in spring4.0+
        super.write(o, contentType, outputMessage);
    }
@param fastJsonConfig the fastJsonConfig to set.
extension-spring5/src/main/java/com/alibaba/fastjson2/support/spring/http/converter/FastJsonHttpMessageConverter.java