code: def assert_not_fitted(oz):
      for param in ("embedded_centers_", "scores_", "fit_time_"):
          assert not hasattr(oz, param)
  
imports: import pytest
  import matplotlib
  import numpy
  from yellowbrick.cluster.icdm import *
  from yellowbrick.datasets import load_nfl
  from yellowbrick.exceptions import YellowbrickValueError
  from unittest import mock
  from tests.fixtures import Dataset
  from tests.base import IS_WINDOWS_OR_CONDA, VisualTestCase
  from sklearn.datasets import make_blobs
  from sklearn.cluster import Birch, AgglomerativeClustering
  from sklearn.decomposition import LatentDirichletAllocation
  from sklearn.cluster import KMeans, AffinityPropagation, MiniBatchKMeans
  from sklearn.pipeline import Pipeline
  from sklearn.impute import SimpleImputer
label_desc: Use image node_id 4 for calling a global function with example usage: assert_not_fitted(oz) without return types