code: public static Specification<JpaTarget> hasTargetUpdateStatus(final Collection<TargetUpdateStatus> updateStatus) {
          return (targetRoot, query, cb) -> targetRoot.get(JpaTarget_.updateStatus).in(updateStatus);
      }
docs: {@link Specification} for retrieving {@link Target}s by "equal to given
  {@link TargetUpdateStatus}".
  
  @param updateStatus
  to be filtered on
  
  @return the {@link Target} {@link Specification}