How to use the csvkit.cli.match_column_identifier function in csvkit

def test_match_column_identifier_numeric(self):
        self.assertEqual(2, match_column_identifier(self.headers, 3))
        self.assertEqual(3, match_column_identifier(self.headers, 3, column_offset=0))

def test_match_column_which_could_be_integer_name_is_treated_as_positional_id(self):
        self.assertEqual(0, match_column_identifier(self.headers, '1'))
        self.assertEqual(1, match_column_identifier(self.headers, '1', column_offset=0))

def test_match_column_identifier_string(self):
        self.assertEqual(2, match_column_identifier(self.headers, 'i_work_here'))
        self.assertEqual(2, match_column_identifier(self.headers, 'i_work_here', column_offset=0))

def test_match_column_which_could_be_integer_name_is_treated_as_positional_id(self):
        self.assertEqual(0, match_column_identifier(self.headers, '1'))
        self.assertEqual(1, match_column_identifier(self.headers, '1', column_offset=0))

def test_match_column_identifier_string(self):
        self.assertEqual(2, match_column_identifier(self.headers, 'i_work_here'))
        self.assertEqual(2, match_column_identifier(self.headers, 'i_work_here', column_offset=0))

def test_match_column_identifier_numeric(self):
        self.assertEqual(2, match_column_identifier(self.headers, 3))
        self.assertEqual(3, match_column_identifier(self.headers, 3, column_offset=0))

self.lat_column = match_column_identifier(column_names, self.args.lat, self.args.zero_based)

            self.lon_column = match_column_identifier(column_names, self.args.lon, self.args.zero_based)

            if self.args.type:
                self.type_column = match_column_identifier(column_names, self.args.type, self.args.zero_based)
            else:
                self.type_column = None

            if self.args.geometry:
                self.geometry_column = match_column_identifier(column_names, self.args.geometry, self.args.zero_based)
            else:
                self.geometry_column = None

            if self.args.key:
                self.id_column = match_column_identifier(column_names, self.args.key, self.args.zero_based)
            else:
                self.id_column = None

def __init__(self, args, column_names):
            self.args = args
            self.column_names = column_names

            self.lat_column = match_column_identifier(column_names, self.args.lat, self.args.zero_based)

            self.lon_column = match_column_identifier(column_names, self.args.lon, self.args.zero_based)

            if self.args.type:
                self.type_column = match_column_identifier(column_names, self.args.type, self.args.zero_based)
            else:
                self.type_column = None

            if self.args.geometry:
                self.geometry_column = match_column_identifier(column_names, self.args.geometry, self.args.zero_based)
            else:
                self.geometry_column = None

            if self.args.key:
                self.id_column = match_column_identifier(column_names, self.args.key, self.args.zero_based)
            else:
                self.id_column = None

def __init__(self, args, column_names):
            self.args = args
            self.column_names = column_names

            self.lat_column = match_column_identifier(column_names, self.args.lat, self.args.zero_based)

            self.lon_column = match_column_identifier(column_names, self.args.lon, self.args.zero_based)

            if self.args.type:
                self.type_column = match_column_identifier(column_names, self.args.type, self.args.zero_based)
            else:
                self.type_column = None

            if self.args.geometry:
                self.geometry_column = match_column_identifier(column_names, self.args.geometry, self.args.zero_based)
            else:
                self.geometry_column = None

            if self.args.key:
                self.id_column = match_column_identifier(column_names, self.args.key, self.args.zero_based)
            else:
                self.id_column = None

def __init__(self, args, column_names):
            self.args = args
            self.column_names = column_names

            self.lat_column = match_column_identifier(column_names, self.args.lat, self.args.zero_based)

            self.lon_column = match_column_identifier(column_names, self.args.lon, self.args.zero_based)

            if self.args.type:
                self.type_column = match_column_identifier(column_names, self.args.type, self.args.zero_based)
            else:
                self.type_column = None

            if self.args.geometry:
                self.geometry_column = match_column_identifier(column_names, self.args.geometry, self.args.zero_based)
            else:
                self.geometry_column = None

            if self.args.key:
                self.id_column = match_column_identifier(column_names, self.args.key, self.args.zero_based)
            else: