@Test
 public void testRequisition() throws Exception {
   createRequisition();
   Requisition r = m_foreignSourceRepository.getRequisition(m_defaultForeignSourceName);
   TestVisitor v = new TestVisitor();
   r.visit(v);
   assertEquals("number of nodes visited", 2, v.getNodeReqs().size());
   assertEquals("node name matches", "apknd", v.getNodeReqs().get(0).getNodeLabel());
 }