public Output<Optional<RoleRefPatch>> roleRef() {
        return Codegen.optional(this.roleRef);
    }
@return RoleRef can only reference a ClusterRole in the global namespace. If the RoleRef cannot be resolved, the Authorizer must return an error. This field is immutable.
sdk/java/src/main/java/com/pulumi/kubernetes/rbac/v1/ClusterRoleBindingPatch.java