code: public List<TotalTargetCountActionStatus> getRolloutStatus(final Long rolloutId) {
          final Cache cache = cacheManager.getCache(CACHE_RO_NAME);
  
          return retrieveFromCache(rolloutId, cache);
      }
docs: Retrieves cached list of {@link TotalTargetCountActionStatus} of
  {@link Rollout}s.
  
  @param rolloutId
  to retrieve cache entries for
  @return map of cached entries