code: def machine_type(
      self, cores: int, worker_type: str, local_ssd: bool
  ) -> str:
      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 1 for calling the CloudResourceManager obj's underlying member method code with example usage: obj.machine_type(cores, worker_type, local_ssd) without return types