code: def safe_to_scale(self):
      return self.safe_to_scale_flag
  
imports: import re
  import threading
  from subprocess import CalledProcessError
  from typing import Callable, Dict, List, Optional
  from ray.autoscaler.node_provider import NodeProvider
label_desc: Use image node_id 13 for calling the MockProvider obj's underlying member method code with example usage: obj.safe_to_scale() and returns: self