code: def worker_type_and_cores(self, machine_type: str) -> Tuple[str, int]:
      raise NotImplementedError
  
imports: import abc
  import logging
  from typing import Any, List, Tuple
  from hailtop.utils import time_msecs
  from ..file_store import FileStore
  from ..instance_config import InstanceConfig, QuantifiedResource
  from .instance import Instance
label_desc: Use image node_id 2 for calling the CloudResourceManager obj's underlying member method code with example usage: obj.worker_type_and_cores(machine_type) without return types