code: def get_shards(self, part_shard_id):
      partition_idx, shard_idx = part_shard_id
      return self.partitions[part_shard_id][shard_idx]
  
imports: from __future__ import annotations
  from collections import defaultdict
  import ray
  import ray._private.services
  import uuid
  import random
  from bigdl.orca.data import XShards
  from bigdl.orca.ray import OrcaRayContext
  import logging
  from bigdl.dllib.utils.log4Error import invalidInputError
  from numpy import ndarray
  from typing import TYPE_CHECKING, Any, Callable, DefaultDict, Dict, List, Tuple, Union, no_type_check
label_desc: Use image node_id 4 for calling the LocalStore obj's underlying member method code with example usage: obj.get_shards(part_shard_id) and returns: self