code: def test_private_populate_space_deprecated_and_call_public(tmp_path):
      oracle = OracleStub(directory=tmp_path, objective="val_loss")
      with pytest.deprecated_call():
          assert isinstance(oracle._populate_space("100"), dict)
  
imports: import datetime
  import threading
  import time
  import numpy
  import pytest
  import keras_tuner
  from keras_tuner.engine import oracle
  from keras_tuner.engine import trial
  from keras_tuner.tuners import gridsearch
label_desc: Use image node_id 5 for calling a global function with example usage: test_private_populate_space_deprecated_and_call_public(tmp_path) without return types