/**
  * Test get proximal primitive parents.
  *
  * @throws Exception the exception
  */
 public void testGetProximalPrimitiveParents() throws Exception {
   Collection<String> proximalPrimitives =
       testNormalFormHierarchyProvider.getProximalPrimitiveParents(conceptId);
   assertTrue("Must have one proximal primitive", proximalPrimitives.size() == 1);
 }