def prep(self):
        if 'savepass' not in self.values:
            if self.sasl.sec_query(self, 'CLEAR-PASSWORD'):
                self.values['savepass'] = True

        if 'savepass' not in self.values:
            del self.values['password']

        return True
Prepare for processing by deleting the password if
dataset/ETHPy150Open dwd/Suelta/suelta/mechanisms/plain.py/PLAIN.prep