code: def _ray_posttask(self, key, result, pre_state):
      execution_time = timer() - pre_state
      if execution_time > self.put_threshold:
          self.cache_actor.put.remote(str(key), result)
  
imports: import ray
  import dask.array
  from ray.util.dask import RayDaskCallback, ray_dask_get
  from timeit import default_timer
label_desc: Use image node_id 4 for calling the SimpleCacheCallback obj's underlying member method code with example usage: obj._ray_posttask(key, result, pre_state) without return types