code: protected String getRootPath(CmsUUID structureId, boolean online) throws CmsException {
  
          CmsConfigurationCache cache = online ? m_onlineCache : m_offlineCache;
          return cache.getPathForStructureId(structureId);
      }
docs: Gets the root path for a given resource structure id.<p>
  
  @param structureId the structure id
  @param online if true, the resource will be looked up in the online project ,else in the offline project
  
  @return the root path for the given structure id
  
  @throws CmsException if something goes wrong