def unicode_escape_sequence_fix(self, value):
        """
        It is possible to define unicode characters in the config either as the
        actual utf-8 character or using escape sequences the following all will
        show the Greek delta character.
        Δ \N{GREEK CAPITAL LETTER DELTA} \U00000394  \u0394
        """

        def fix_fn(match):
            # we don't escape an escaped backslash
            if match.group(0) == r"\\":
                return r"\\"
            return match.group(0).encode("utf-8").decode("unicode-escape")

        return re.sub(r"\\\\|\\u\w{4}|\\U\w{8}|\\N\{([^}\\]|\\.)+\}", fix_fn, value)
It is possible to define unicode characters in the config either as the
        actual utf-8 character or using escape sequences the following all will
        show the Greek delta character.
        Δ \N{GREEK CAPITAL LETTER DELTA} \U00000394  \u0394