docs: public static final boolean isFolderType(int typeId) {
  
          try {
              return OpenCms.getResourceManager().getResourceType(typeId).isFolder();
          } catch (CmsLoaderException e) {
              if (LOG.isWarnEnabled()) {
                  LOG.warn(Messages.get().getBundle().key(Messages.ERR_UNKNOWN_RESOURCE_TYPE_1, new Integer(typeId)), e);
              }
          }
          return false;
      }