code: protected Path getPathForURI(Path fsSpecStoreDirPath, URI uri, String version) {
      return PathUtils.addExtension(PathUtils.mergePaths(fsSpecStoreDirPath, new Path(uri)), version);
    }
docs: Construct a file path given URI and version of a spec.
  
  @param fsSpecStoreDirPath The directory path for specs.
  @param uri Uri as the identifier of JobSpec
  @return