code: def exit_chief(oracle):
      return (
          len(oracle.ongoing_trials) == 0 and len(oracle.tuner_ids) == 0
      )
  
imports: import os
  import time
  from concurrent import futures
  import grpc
  from keras_tuner import protos
  from keras_tuner.engine import hyperparameters
  from keras_tuner.engine import trial
  from keras_tuner.engine.oracle import synchronized
label_desc: Use image node_id 1 for calling a global function with example usage: exit_chief(oracle) and returns: unknown