docs: public static File[] getVersionDirs(File rootDir, final long minId, final long maxId) {
          return rootDir.listFiles(new FileFilter() {
  
              public boolean accept(File pathName) {
                  if(checkVersionDirName(pathName)) {
                      long versionId = getVersionId(pathName);
                      if(versionId != -1 && versionId <= maxId && versionId >= minId) {
                          return true;
                      }
                  }
                  return false;
              }
          });
      }