@Test
 public void testGetSuccessors() {
   final NetFactsType net = (NetFactsType) specUnderTest.getDecomposition().get(0);
   final ProcessControlElements pcElements = net.getProcessControlElements();
   LOGGER.debug("Successors Map:");
   checkSuccessors(
       pcElements.getInputCondition(), context.getPostSet(pcElements.getInputCondition()));
   for (final ExternalNetElementType element : pcElements.getTaskOrCondition()) {
     checkSuccessors(element, context.getPostSet(element));
   }
   checkSuccessors(
       pcElements.getOutputCondition(), context.getPostSet(pcElements.getOutputCondition()));
 }