@Test
void testUnknownElement() {

    final PipelineData pipelineData = new PipelineData();
    pipelineData.addElement(ELEM_TYPE, "test");
    pipelineData.addLink("unknown", "test");
    test(null, pipelineData, 0, 0, 0, 0, 0, 0, 0, 0);
}