code: def __init__(self):
      self._cluster_api = None
      self._global_resource_ref = None
  
      self._band_slot_managers = dict()
  
imports: import asyncio
  import logging
  import os
  import time
  from typing import Dict, List, NamedTuple, Set, Tuple
  import psutil
  from ....None import oscar
  from ....oscar.errors import NoFreeSlot, SlotStateError
  from ....oscar.backends.allocate_strategy import IdleLabel
  from ....resource import Resource
  from ....typing import BandType
  from ...cluster import WorkerSlotInfo, ClusterAPI
label_desc: Use image node_id 1 to create a new WorkerSlotManagerActor object from inherited base classes: mo with example: obj = WorkerSlotManagerActor()