/**
  * This is a valid MD5
  *
  * @throws InvalidModelException
  */
 @Test
 public void testValidateMd5Valid() throws InvalidModelException {
   String md5 = "79054025255fb1a26e4bc422aef54eb4";
   manager.validateMd5(md5);
 }
 @Test(expected = InvalidModelException.class)
 public void testValidateMd5Invalid() throws InvalidModelException {
   String notAnMd5AtAll = "not an md5";
   manager.validateMd5(notAnMd5AtAll);
 }