class_docstr: Test public coremltools API visibilities.
code: def test_models(self):
      expected = [
          "MLModel",
          "datatypes",
          "model",
          "neural_network",
          "pipeline",
          "tree_ensemble",
          "utils",
          "nearest_neighbors",
          "feature_vectorizer",
      ]
      _check_visible_modules(_get_visible_items(ct.models), expected)
  
imports: import coremltools
  import pytest
label_desc: Use image node_id 3 for calling the TestApiVisibilities obj's underlying member method code with example usage: obj.test_models() without return types