@SuppressWarnings({"unchecked"})
 public final void testInstancesAreNotSharedBetweenContainers() {
   final MutablePicoContainer picoA = new DefaultPicoContainer();
   final MutablePicoContainer picoB = new DefaultPicoContainer();
   picoA.addAdapter(
       new ThreadLocalizing.ThreadLocalized(
           new ConstructorInjection.ConstructorInjector(List.class, ArrayList.class, null)));
   picoB.addAdapter(
       new ThreadLocalizing.ThreadLocalized(
           new ConstructorInjection.ConstructorInjector(List.class, ArrayList.class, null)));
   final List<String> hello1 = picoA.getComponent(List.class);
   final List hello2 = picoA.getComponent(List.class);
   hello1.add("foo");
   assertEquals(hello1, hello2);
   final List hello3 = picoB.getComponent(List.class);
   assertEquals(0, hello3.size());
 }