'Lists all stacks for a user.'

def list_stacks(self, params=None):

    uri = 'stacks'
    if params:
        uri += ('?%s' % urllib.urlencode(params))
    (resp, body) = self.get(uri)
    self.expected_success(200, resp.status)
    body = json.loads(body)
    return rest_client.ResponseBody(resp, body)
