docs: public int remove(CmsUUID id) {
  
          CmsDetailPageInfo info = m_infoById.get(id);
          if (info == null) {
              throw new IllegalArgumentException();
          }
          String type = info.getType();
          List<CmsDetailPageInfo> infos = m_map.get(type);
          int pos = infos.indexOf(info);
          infos.remove(pos);
          m_infoById.remove(id);
          return pos;
  
      }