code: def test_assert_correct_layer_format_dict_keys():
      """[Utils] assert_correct_format: assert raises on no key overlap."""
      np.testing.assert_raises(
          LayerSpecificationError,
          assert_correct_format,
          {"a": [OLS()]},
          {"b": [Scale()]},
      )
  
imports: import numpy
  from mlens.externals.sklearn.base import clone
  from mlens.utils.checks import check_ensemble_build, assert_valid_estimator, assert_correct_format, check_initialized
  from mlens.utils.dummy import OLS, Scale
  from mlens.testing import EstimatorContainer
  from mlens.utils.exceptions import LayerSpecificationError, LayerSpecificationWarning, NotFittedError, ParallelProcessingError, ParallelProcessingWarning
label_desc: Use image node_id 15 for calling a global function with example usage: test_assert_correct_layer_format_dict_keys() without return types