16 files declare their use of CasHelper in CAS 8

CasAutoAssignRolesSubscriber.php in src/Subscriber/CasAutoAssignRolesSubscriber.php

CasHelperTest.php in tests/src/Unit/Service/CasHelperTest.php

CasRedirectorTest.php in tests/src/Unit/Service/CasRedirectorTest.php

CasServerConfig.php in src/CasServerConfig.php

CasServerConfigTest.php in tests/src/Unit/CasServerConfigTest.php

CasSettings.php in src/Form/CasSettings.php

CasSubscriber.php in src/Subscriber/CasSubscriber.php

CasSubscriberTest.php in tests/src/Functional/CasSubscriberTest.php

CasTestSubscriber.php in tests/modules/cas_test/src/CasTestSubscriber.php

CasUserInteractionTestSubscriber.php in tests/modules/cas_user_interaction_test/src/CasUserInteractionTestSubscriber.php

CasValidatorTest.php in tests/src/Unit/Service/CasValidatorTest.php

DenyCas.php in src/PageCache/DenyCas.php

LogoutController.php in src/Controller/LogoutController.php

ProxyCallbackController.php in src/Controller/ProxyCallbackController.php

ServiceController.php in src/Controller/ServiceController.php

ServiceControllerTest.php in tests/src/Unit/Controller/ServiceControllerTest.php