def METHOD_NAME(chunker) -> CBPEResult:
    ref, ana, tgt = load_synthetic_binary_classification_dataset()
    est = CBPE(
        metrics=['f1'],
        y_pred_proba='y_pred_proba',
        y_pred='y_pred',
        y_true='work_home_actual',
        problem_type='classification',
        chunker=chunker,
    ).fit(ref)
    result = est.estimate(ana)
    assert isinstance(result, CBPEResult)
    return result