code: public Map<Long, List<TotalTargetCountActionStatus>> getRolloutGroupStatus(final List<Long> rolloutGroups) {
          final Cache cache = cacheManager.getCache(CACHE_GR_NAME);
  
          return retrieveFromCache(rolloutGroups, cache);
      }
docs: Retrieves cached list of {@link TotalTargetCountActionStatus} of
  {@link RolloutGroup}s.
  
  @param rolloutGroups
  rolloutGroupsIds to retrieve cache entries for
  @return map of cached entries