code: def test_etc():
      X = np.array([[0, 1, 0, 1], [0, 0, 0, 1], [1, 0, 1, 0]])
      y = np.array([0, 1, 0])
      etc = ensemble.DistExtraTreesClassifier(
          n_estimators=10, random_state=5
      )
      etc.fit(X, y)
      preds = etc.predict(X)
      assert np.allclose(preds, np.array([0, 1, 0]))
  
label_desc: Use image node_id 4 for calling a global function with example usage: test_etc() without return types