docs: public static MigratePartitionLeaderInfo getMigratePartitionLeaderInfo(ZooKeeper zk) {
          try {
              byte[] data = zk.getData(migrate_partition_leader_info, null, null);
              if (data != null) {
                  MigratePartitionLeaderInfo info = new MigratePartitionLeaderInfo(data);
                  return info;
              }
          } catch (KeeperException | InterruptedException | JSONException e) {
          }
          return null;
      }