Should be called to get client direct address

        @method address
        @returns {String} client direct address

def address(self):
        """
        Should be called to get client direct address

        @method address
        @returns {String} client direct address
        """
        if self.isDirect():
            base36 = self._iban[4:]
            asInt = int(base36, 36)
            return to_checksum_address(pad_left_hex(baseN(asInt, 16), 20))

        return ""