code: def collect_partitions(self) -> List[List[Dict[str, ndarray]]]:
      part_refs = self.get_partition_refs()
      return [ray.get(part_ref) for part_ref in part_refs]
  
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 7 for calling the RayXShards obj's underlying member method code with example usage: obj.collect_partitions() and returns: unknown