def METHOD_NAME():
    with pytest.raises(InvalidPostProcessingError):
        prophet(
            df=prophet_df,
            time_grain="P1M",
            periods=3,
            confidence_interval=0.0,
        )
    with pytest.raises(InvalidPostProcessingError):
        prophet(
            df=prophet_df,
            time_grain="P1M",
            periods=3,
            confidence_interval=1.0,
        )