code: def test_preds(precalculated_rf_regression_explainer):
      assert isinstance(
          precalculated_rf_regression_explainer.preds, np.ndarray
      )
  
imports: import pandas
  import numpy
  from pandas.api.types import is_categorical_dtype, is_numeric_dtype
  import plotly.graph_objects
label_desc: Use image node_id 7 for calling a global function with example usage: test_preds(precalculated_rf_regression_explainer) without return types