Jose\Object\JWE::toFlattenedJSON PHP Method

    public function toFlattenedJSON($id)
    {
        $recipient = $this->getRecipient($id);
        $json = $this->getJSONBase();
        if (!empty($recipient->getHeaders())) {
            $json['header'] = $recipient->getHeaders();
        }
        if (!empty($recipient->getEncryptedKey())) {
            $json['encrypted_key'] = Base64Url::encode($recipient->getEncryptedKey());
        }
        return json_encode($json);
    }