code: def set_policy(self, policy, headers=None):
          
          response = self.connection.make_request('PUT', self.name,
                                                  data=policy,
                                                  query_args='policy',
                                                  headers=headers)
          body = response.read()
          if response.status >= 200 and response.status <= 204:
              return True
          else:
              raise self.connection.provider.storage_response_error(
                  response.status, response.reason, body)
docs: Add or replace the JSON policy associated with the bucket.
  
          :type policy: str
          :param policy: The JSON policy as a string.