code: public static void injectClassHandler(ClassLoader robolectricClassLoader, ClassHandler classHandler) {
          String className = RobolectricInternals.class.getName();
          Class<?> robolectricInternalsClass = ReflectionHelpers.loadClass(robolectricClassLoader, className);
          ReflectionHelpers.setStaticField(robolectricInternalsClass, "classHandler", classHandler);
      }
docs: protected Class<? extends TestLifecycle> getTestLifecycleClass() {