code: private URI getNextTemporaryPath() {
      Path basePath = ghfs.getHadoopPath(finalGcsPath);
      Path baseDir = basePath.getParent();
      Path tempPath = new Path(
          baseDir,
          String.format("%s%s.%d.%s",
              TEMPFILE_PREFIX, basePath.getName(), curComponentIndex, UUID.randomUUID().toString()));
      return ghfs.getGcsPath(tempPath);
    }
docs: Returns URI to be used for the next "tail" file in the series.