def METHOD_NAME(self):
    start = datetime(2019, 1, 1)
    end = datetime(2019, 10, 31)
    rotterdam = [
        g.id
        for g in Geographies().search(term="rotterdam").to_list()
        if "port" in g.layer
    ]
    crude = [
        p.id
        for p in Products().search("crude").to_list()
        if "Crude" == p.name
    ]
    rotterdam_crude_timeseries = (
        CargoTimeSeries()
        .search(
            filter_activity="loading_state",
            timeseries_unit="bpd",
            timeseries_frequency="month",
            filter_time_min=start,
            filter_time_max=end,
            filter_origins=rotterdam,
            filter_products=crude,
        )
        .to_df()
    )
    rotterdam_all_products_timeseries = (
        CargoTimeSeries()
        .search(
            filter_activity="loading_state",
            timeseries_unit="bpd",
            timeseries_frequency="month",
            filter_time_min=start,
            filter_time_max=end,
            filter_origins=rotterdam,
        )
        .to_df()
    )
    assert (
        rotterdam_all_products_timeseries["value"].sum()
        > rotterdam_crude_timeseries["value"].sum()
    )