def clear(self):
    self.out.seek(0)
    self.out.truncate(0)
Return ChallengeBody from Challenge.
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/ext/webapp/mock_webapp.py/MockResponse.clear--crossover with--dataset/ETHPy150Open letsencrypt/letsencrypt/certbot/tests/acme_util.py/chall_to_challb