let caCrt = '';
  try {
    caCrt = fs.readFileSync('./ca-bundle3.crt')
  } catch (err) {
    console.log('Make sure that the CA cert file is named ca.crt', err);
  }

  const httpsAgent = new HttpsProxyAgent("http://proxy.matmut.fr:80", { ca: caCrt, keepAlive: true });
  const myAxios = axios.default.create({
    httpsAgent
  });
  const fgaClient = new OpenFgaClient(fgaClientConfig, myAxios);

    static init(configuration, axios = axios_1.default) {
        return new Credentials(configuration.credentials, axios);
    }
    constructor(authConfig, axios) {
        this.authConfig = authConfig;
        this.axios = axios;
        this.initConfig();
        this.isValid();
    }

                const response = yield (0, common_1.attemptHttpRequest)({
                    url: `https://${clientCredentials.apiTokenIssuer}/oauth/token`,
                    method: "post",
                    data: {
                        client_id: clientCredentials.clientId,
                        client_secret: clientCredentials.clientSecret,
                        audience: clientCredentials.apiAudience,
                        grant_type: "client_credentials",
                    },
                    headers: {
                        "Content-Type": "application/x-www-form-urlencoded"
                    }
                }, {
                    maxRetry: 3,
                    minWaitInMs: 100,
                }, this.axios);