code: def test_import_demo_extension_classes():
      try:
          from interpret.ext.blackbox import (
              ExampleBlackboxExplainer,
          )  # noqa
          from interpret.ext.greybox import (
              ExampleGreyboxExplainer,
          )  # noqa
          from interpret.ext.glassbox import (
              ExampleGlassboxExplainer,
          )  # noqa
          from interpret.ext.data import ExampleDataExplainer  # noqa
          from interpret.ext.perf import ExamplePerfExplainer  # noqa
          from interpret.ext.provider import (
              ExampleVisualizeProvider,
          )  # noqa
      except ImportError as import_error:
          raise_from(
              Exception(
                  "Failure in demo while trying "
                  "to load example explainers through extension_utils",
                  import_error,
              ),
              None,
          )
  
imports: from six import raise_from
  from .tutils import assert_valid_explanation
  from .tutils import synthetic_classification
  from interpret.glassbox import LogisticRegression
label_desc: Use image node_id 1 for calling a global function with example usage: test_import_demo_extension_classes() without return types