Multipart id = AnnotationUtils.getAnnotation(anns, Multipart.class);
Attachment multipart = AttachmentUtils.getMultipart(c, id, mt, infos);
if (multipart != null) {
return fromAttachment(multipart, c, t, anns);
} else if (id != null && !id.required()) {
/*
* If user asked for a null, give them a null.
*/
return null;
}