public Optional<Output<GroupSubjectArgs>> group() {
        return Optional.ofNullable(this.group);
    }
Subject matches the originator of a request, as identified by the request authentication system. There are three ways of matching an originator; by user, group, or service account.
sdk/java/src/main/java/com/pulumi/kubernetes/flowcontrol/v1alpha1/inputs/SubjectArgs.java