def METHOD_NAME(
    df: pd.DataFrame,
    column: str,
    aggregation_level,
    state=None,
    states=None,
    on=None,
    after=None,
    before=None,
    exclude_county_999=False,
    exclude_fips_prefix=None,
):
    """Return values in selected rows and column of df.
    Exists to call `make_rows_key` without listing all the parameters.
    """
    rows_key = dataset_utils.make_rows_key(
        df,
        aggregation_level,
        country=None,
        fips=None,
        state=state,
        states=states,
        on=on,
        after=after,
        before=before,
        exclude_county_999=exclude_county_999,
        exclude_fips_prefix=exclude_fips_prefix,
    )
    return set(df.loc[rows_key][column])