6 files declare their use of GroupAccessResult in Group 8

GroupAccessControlHandler.php in src/Entity/Access/GroupAccessControlHandler.php

GroupContentAccessControlHandler.php in src/Plugin/GroupContentAccessControlHandler.php

GroupContentEnablerBase.php in src/Plugin/GroupContentEnablerBase.php

GroupLatestRevisionCheck.php in src/Entity/Access/GroupLatestRevisionCheck.php

GroupMembership.php in src/Plugin/GroupContentEnabler/GroupMembership.php

GroupRevisionCheck.php in src/Entity/Access/GroupRevisionCheck.php