docstr: Destroys the cloud instance.
  
  :param str instance_id: Cloud instance ID to be destroyed (currently, only AWS EC2 is supported)
docstr_tok: ["Destroys","the","cloud","instance",".",":","param","str","instance_id",":","Cloud","instance","ID","to","be","destroyed","(","currently",",","only","AWS","EC2","is","supported",")"]
code: def spin_down_worker(self, instance_id):
      """Destroys the cloud instance.
  
      :param str instance_id: Cloud instance ID to be destroyed (currently, only AWS EC2 is supported)
      """
  
imports: import logging
  from abc import ABC, abstractmethod
  from os import environ
  import attr
  from ..backend_api import Session
  from ..backend_api.session.defs import ENV_AUTH_TOKEN
label_desc: Use image node_id 3 for calling the CloudDriver obj's underlying member method code with example usage: obj.spin_down_worker(instance_id) without return types