'returns a bucket\'s default object acl'

def get_def_acl(self, validate=False, headers=None):

    self._check_bucket_uri('get_def_acl')
    bucket = self.get_bucket(validate, headers)
    acl = bucket.get_def_acl(headers)
    self.check_response(acl, 'acl', self.uri)
    return acl
