class_docstr: a dictionary-like DHT value type that maps sub-keys to values with individual expirations
class_docstr_tok: ["a","dictionary-like","DHT","value","type","that","maps","sub-keys","to","values","with","individual","expirations"]
code: def unpackb(cls, raw: bytes) -> DictionaryDHTValue:
      maxsize, latest_expiration_time, items = MSGPackSerializer.loads(
          raw
      )
      with DictionaryDHTValue(maxsize).freeze() as new_dict:
          for key, value, expiration_time in items:
              new_dict.store(key, value, expiration_time)
          new_dict.latest_expiration_time = latest_expiration_time
          return new_dict
  
file_path: hivemind/hivemind/dht/storage.py
imports: from __future__ import annotations
  from typing import Optional, Union
  from hivemind.dht.routing import DHTID, BinaryDHTValue, Subkey
  from hivemind.utils.serializer import MSGPackSerializer
  from hivemind.utils.timed_storage import DHTExpiration, KeyType, TimedStorage, ValueType
label_desc: Use image node_id 3 for calling the DictionaryDHTValue obj's underlying member method code with example usage: obj.unpackb(cls, raw) and returns: new_dict