@Test
    @SuppressWarnings("try")
    void multiple_container_elements_gives_exception() {
        try (JDisc container = fromServicesXml("<services>" + //
                "<container version=\"1.0\" id=\"id1\" />" + //
                "<container version=\"1.0\" />" + //
                "</services>", Networking.disable)) {
            fail("expected exception");
        } catch (Exception e) {
            assertTrue(e.getMessage().contains("container id='id1', container id=''"));
        }
    }
@author Tony Vaagenes
@author gjoranv
@author ollivir
application/src/test/java/com/yahoo/application/container/ContainerTest.java