code: def test_rfclas_graphviz_available(
      precalculated_rf_classifier_explainer,
  ):
      assert isinstance(
          precalculated_rf_classifier_explainer.graphviz_available, bool
      )
  
file_path: explainerdashboard/tests/test_randomforest_explainer.py
imports: import pandas
  import plotly.graph_objects
  import dtreeviz
label_desc: Use image node_id 1 for calling a global function with example usage: test_rfclas_graphviz_available(precalculated_rf_classifier_explainer) without return types