Using phpCas in CI4 (Composer install)

Dear kenjis,

Thanks for your help. I tried just the easy test to use phpCAS in a controller, but when I try to instantiate ($cas =new phpCAS()) I still get  'Class "phpCAS" not found'.
My ThirdParty/Vendor directory looks like (installed via Composer):


My composer.json in CAS source directory looks like:

Best regards,

Zeff