@staticmethod
def create_sample_set(df_filt, annot_colname):
    """
        Create the set of all terms in the specific sample

        :param df_filt: DataFrame with one term per row, filtered so that only terms present in the sample of interest
        are included in the annot_colname column
        :param annot_colname: Name of annotation column - either tax_colname or func_colname
        :return: Set of all terms in df_filt
        """
    return set(df_filt[annot_colname])
