docs: private String getRandomPathSuffix(StructuralNode node, URI uri) throws URIException {
          String resultSuffix = getChildSuffix(node, true);
  
          String path = "";
          path = (uri.getPath() == null) ? "" : uri.getPath();
          path = path + (path.endsWith("/") ? "" : "/") + Long.toString(getRndPositiveLong());
          path = path + resultSuffix;
  
          return path;
  
      }