public AttachmentEntry uploadAttachment(File file, String parentLink, String title,
String description) throws IOException, ServiceException {
String fileMimeType = mediaTypes.getContentType(file);
AttachmentEntry newAttachment = new AttachmentEntry();
newAttachment.setMediaSource(new MediaFileSource(file, fileMimeType));
newAttachment.setTitle(new PlainTextConstruct(title));
newAttachment.setSummary(new PlainTextConstruct(description));
newAttachment.addLink(SitesLink.Rel.PARENT, Link.Type.ATOM, parentLink);
return service.insert(new URL(getContentFeedUrl()), newAttachment);