code: def register_objectrefs(self, map_refs, reduce_refs):
      self.map_refs = map_refs
      self.reduce_refs = reduce_refs
  
imports: import time
  from typing import Any, Callable, Iterable, List, Tuple, Union
  import ray
  from ray import ObjectRef
  from ray.cluster_utils import Cluster
label_desc: Use image node_id 2 for calling the _StatusTracker obj's underlying member method code with example usage: obj.register_objectrefs(map_refs, reduce_refs) without return types