class_docstr: Test public coremltools API visibilities.
code: def test_top_level(self):
      if not ct.utils._is_macos():
          EXPECTED_MODULES.remove("libcoremlpython")
      _check_visible_modules(_get_visible_items(ct), EXPECTED_MODULES)
  
imports: import coremltools
label_desc: Use image node_id 1 for calling the TestApiVisibilities obj's underlying member method code with example usage: obj.test_top_level() without return types