Currently when you want to use a multipart/form-data client call outside of a container, e.g. SeBootstrap, you must annotate the application with jakarta.servlet.annotation.MultipartConfig. While this could be useful in some cases where we might want to configure multipart data, it should be required.

Also while looking at this, in a CDI container the getAnnotation(MultipartConfig.class) will return null because the application will be a CDI bean.