    def begin_auth(self):
        # type: () -> None
        '''
        Attempts to authorize this user. Changes the user's state to
        WAITING_ON_AUTH.
        '''
        self.send_message('sending_push')
        self.auth.auth(self.pending_task.description)
Attempts to authorize this user. Changes the user's state to
WAITING_ON_AUTH.
securitybot/user.py