code: private void doDumpOpenJPAPCRegistry(final PrintWriter out) {
          ArrayList<ClassLoader> tclList = new ArrayList<ClassLoader>();
          for (JPAPUnitInfo puinfo : allJPAPUnitInfoList) {
              tclList.add(puinfo.getNewTempClassLoader());
          }
  
          OpenJPAIntrospection.dumpOpenJPAPCRegistry(tclList, out);
      }
docs: /*
  OpenJPA Diagnostic Enhancements