AnalysisEngine ae = UIMAFramework.produceAnalysisEngine(aed);
// define a caspool of size 2
CasManager cm = ((UimaContext_ImplBase)ae.getUimaContext()).getResourceManager().getCasManager();
cm.defineCasPool("uniqueString", 2, null);
CAS c1 = cm.getCas("uniqueString");
CAS c2 = cm.getCas("uniqueString");
c1.getJCas();