private void writeDataManifest(final SnapshotDataManifest manifest) throws IOException {
    try (
      FSDataOutputStream stream = workingDirFs.create(new Path(workingDir, DATA_MANIFEST_NAME))) {
      manifest.writeTo(stream);
    }
  }
Get all the Region Manifest from the snapshot. This is an helper to get a map with the region
encoded name
hbase-server/src/main/java/org/apache/hadoop/hbase/snapshot/SnapshotManifest.java