'Retrieve objects list in a container
:return: A list of dict that describe objects
or None if container does not exist'

def get_container_objects(self):

    qs = '?format=json'
    path = (self.base_path + qs)
    ret = self.httpclient.request('GET', path)
    if (ret.status_code == 404):
        return None
    if ((ret.status_code < 200) or (ret.status_code > 300)):
        raise SwiftException(('GET    request    failed    with    error    code    %s' % ret.status_code))
    content = ret.read()
    return json_loads(content)
