'Returns the details of a single volume_type extra spec.'

def show_volume_type_extra_specs(self, volume_type_id, extra_specs_name):

    url = ('types/%s/extra_specs/%s' % (volume_type_id, extra_specs_name))
    (resp, body) = self.get(url)
    body = json.loads(body)
    self.expected_success(200, resp.status)
    return rest_client.ResponseBody(resp, body)
