public function getAllowedIdps($spEntityId)
    {
        if (isset($this->allowedIdpsPerSp[$spEntityId])) {
            return $this->allowedIdpsPerSp[$spEntityId];
        }

        $this->allowedIdpsPerSp[$spEntityId] = $this->client->getAllowedIdps($spEntityId);

        return $this->allowedIdpsPerSp[$spEntityId];
    }