code: public EditLogLedgerMetadata readEditLogLedgerMetadata(
        String fullyQualifiedPath) throws IOException {
      EditLogLedgerMetadataWritable writable = localWritable.get();
      writable = readWritableFromZk(fullyQualifiedPath, writable, null);
      return writable == null ? null : writable.get();
    }
docs: Instantiate an {@link EditLogLedgerMetadata} from a specified ZNode path.
  @param fullyQualifiedPath Full path to the ZNode containing the ledger
  metadata.
  @return The edit log ledger metadata or null if the ZNode does not exist
  @throws IOException If there as an unrecoverable error communicating with
  ZooKeeper