code: def test_forecaster(self):
      forecaster = Forecaster()
      assert not is_classifier(forecaster)
      assert is_forecaster(forecaster)
      assert is_quantile_forecaster(forecaster)
  
file_path: responsible-ai-toolbox/raiutils/tests/test_model_utils.py
imports: from raiutils.models import is_classifier, is_forecaster, is_object_detector, is_quantile_forecaster
label_desc: Use image node_id 3 for calling the TestModel obj's underlying member method code with example usage: obj.test_forecaster() without return types