Client secret is required when Requesting an Access Token with an Authorization Code

[leo-le-07]

According to the document, the "client_secret" is optional. However, the function fetchAccessTokenFromAuthorizationCode only works when passing client secret. Otherwise, we received error "invalid_client"

    const token = await Nuxeo.oauth2.fetchAccessTokenFromAuthorizationCode(
      'http://localhost:8080/nuxeo',
      'my-local-app',
      code,
      { client_secret: 'secrettt' },
    );