code: public static Specification<JpaTarget> notEqualToTargetUpdateStatus(final TargetUpdateStatus updateStatus) {
          return (targetRoot, query, cb) -> cb.not(cb.equal(targetRoot.get(JpaTarget_.updateStatus), updateStatus));
      }
docs: {@link Specification} for retrieving {@link Target}s by "not equal to
  given {@link TargetUpdateStatus}".
  
  @param updateStatus
  to be filtered on
  
  @return the {@link Target} {@link Specification}