code: def get(self, block_index, key):
      start = time.perf_counter()
      result = self._get(block_index, key)
      self.total_time += time.perf_counter() - start
      self.num_accesses += 1
      return result
  
imports: import bisect
  import logging
  import random
  import time
  from collections import defaultdict
  from typing import TYPE_CHECKING, Any, List, Optional
  import numpy
  import ray
  from ray.data._internal.remote_fn import cached_remote_fn
  from ray.data.block import BlockAccessor
  from ray.data.context import DataContext
  from ray.types import ObjectRef
  from ray.util.annotations import PublicAPI
label_desc: Use image node_id 3 for calling the _RandomAccessWorker obj's underlying member method code with example usage: obj.get(block_index, key) and returns: result