    public void serviceAccount() {
        Response response = realm.clients().create(ClientBuilder.create().clientId("serviceClient").serviceAccount().build());
        String id = ApiUtil.getCreatedId(response);
        getCleanup().addClientUuid(id);
        response.close();
        UserRepresentation userRep = realm.clients().get(id).getServiceAccountUser();
        assertEquals("service-account-serviceclient", userRep.getUsername());
        // KEYCLOAK-11197 service accounts are no longer created with a placeholder e-mail.
        assertNull(userRep.getEmail());
    }
The software contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data.