LOG.info("testGetChildStems");
  public void testGetChildStems() {    GrouperSession  s     = SessionHelper.getRootSession();    Stem            root  = StemHelper.findRootStem(s);    Stem            com   = StemHelper.addChildStem(root, "com", "commercial");    Stem            edu   = StemHelper.addChildStem(root, "edu", "education");    Stem            i2    = StemHelper.addChildStem(edu, "i2", "internet2");    Stem            uofc  = StemHelper.addChildStem(edu, "uofc", "uchicago");    Stem            net   = StemHelper.addChildStem(root, "net", "network");    Stem            org   = StemHelper.addChildStem(root, "org", "organization");    Set children = root.getChildStems();    Assert.assertTrue("4 child stems", children.size() == 4);    Iterator iter = children.iterator();    while (iter.hasNext()) {      Stem child = (Stem) iter.next();      try {        Stem parent = child.getParentStem();        Assert.assertTrue("child stem has parent", true);        Assert.assertTrue("parent == root", parent.equals(root));        Assert.assertTrue(          "root has STEM on parent", parent.hasStem(s.getSubject())        );      }      catch (StemNotFoundException eSNF) {        Assert.fail("child stem has no parent: " + eSNF.getMessage());      }    }  } // public void testGetChildStems()