root.map(Activation::getOs).ifPresent(oa -> {
            stk.push(new ActivationFrame("os", Optional.of(oa)));
            stk.push(new ActivationFrame("arch", Optional.empty()));
            validator.accept(oa.getArch());
            stk.peek().location = "family";
            validator.accept(oa.getFamily());
            stk.peek().location = "name";
            validator.accept(oa.getName());

        MIEName targ = new MIEName(this.gssContext.getTargName().export());

        ASN1ObjectIdentifier mech = ASN1ObjectIdentifier.getInstance(this.gssContext.getMech().getDER());
        for (KerberosTicket ticket : subject.getPrivateCredentials(KerberosTicket.class)) {
            MIEName client = new MIEName(mech, ticket.getClient().getName());

        when(targ.export()).thenReturn(buildExportName(new Oid("1.2.3"), "service"));
        when(gssContext.getSrcName()).thenReturn(src);
        when(gssContext.getTargName()).thenReturn(targ);
        when(gssContext.getMech()).thenReturn(new Oid("1.2.3"));

        assertNull(ctx.searchSessionKey(new javax.security.auth.Subject()));
    }

    @Test
    @DisplayName("toString shows basic info when not established")