code: String getBlacklistFilter() {
  
          if (m_ignoreBlacklist) {
              return "";
          }
          String result = "";
          List<CmsUUID> blacklist = m_config.getBlacklist();
          List<String> blacklistStrings = Lists.newArrayList();
          for (CmsUUID id : blacklist) {
              blacklistStrings.add("\"" + id.toString() + "\"");
          }
          if (!blacklistStrings.isEmpty()) {
              result = "&fq=-id:(" + CmsStringUtil.listAsString(blacklistStrings, " OR ") + ")";
          }
          return result;
      }
docs: Returns the blacklist filter.<p>
  
  @return the blacklist filter