code: protected boolean shouldUpdateAtAll(I_CmsSearchIndex index) {
  
          if (I_CmsSearchIndex.REBUILD_MODE_NEVER.equals(index.getRebuildMode())) {
              LOG.debug(Messages.get().getBundle().key(Messages.LOG_SKIP_REBUILD_FOR_MODE_NEVER_1, index.getName()));
              return false;
          } else {
              return true;
          }
  
      }
docs: Checks, if the index should be rebuilt/updated at all by the search manager.
  @param index the index to check.
  @return a flag, indicating if the index should be rebuilt/updated at all.