def test_EXPIRE(self):
        """
        The server can advertise its per-user expiration as well as a global
        expiration.
        """
        contained(self, b"EXPIRE 60 USER", self.caps, self.pcaps)
        contained(self, b"EXPIRE 25", self.lpcaps)

        The server can advertise its per-user expiration as well as a global
        expiration.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/mail/test/test_pop3.py