code: private static boolean include(String host, java.nio.file.Path path) throws ServiceException {
          List<java.nio.file.Path> roots = getRootPaths(host);
          if (roots != null) {
              for (java.nio.file.Path rootPath : roots) {
                  if (path.startsWith(rootPath))
                      return true;
              }
          }
          return false;
      }
docs: Checks whether subpath of a designated root dir.
  Root dirs must be configured per host or globally (not both).