### Question:
Lifecycling { @NonNull static GenericLifecycleObserver getCallback(Object object) { if (object instanceof FullLifecycleObserver) { return new FullLifecycleObserverAdapter((FullLifecycleObserver) object); } if (object instanceof GenericLifecycleObserver) { return (GenericLifecycleObserver) object; } final Class<?> klass = object.getClass(); int type = getObserverConstructorType(klass); if (type == GENERATED_CALLBACK) { List<Constructor<? extends GeneratedAdapter>> constructors = sClassToAdapters.get(klass); if (constructors.size() == 1) { GeneratedAdapter generatedAdapter = createGeneratedAdapter( constructors.get(0), object); return new SingleGeneratedAdapterObserver(generatedAdapter); } GeneratedAdapter[] adapters = new GeneratedAdapter[constructors.size()]; for (int i = 0; i < constructors.size(); i++) { adapters[i] = createGeneratedAdapter(constructors.get(i), object); } return new CompositeGeneratedAdaptersObserver(adapters); } return new ReflectiveGenericLifecycleObserver(object); } private  Lifecycling(); static String getAdapterName(String className);  }### Answer:
@Test public void testDerivedWithNewLfMethodsNoGeneratedAdapter() { GenericLifecycleObserver callback = Lifecycling.getCallback(new DerivedWithNewMethods()); assertThat(callback, instanceOf(ReflectiveGenericLifecycleObserver.class)); }
@Test public void testDerivedWithNoNewLfMethodsNoGeneratedAdapter() { GenericLifecycleObserver callback = Lifecycling.getCallback(new DerivedWithNoNewMethods()); assertThat(callback, instanceOf(SingleGeneratedAdapterObserver.class)); }
@Test public void testDerivedWithOverridenMethodsNoGeneratedAdapter() { GenericLifecycleObserver callback = Lifecycling.getCallback( new DerivedWithOverridenMethodsWithLfAnnotation()); assertThat(callback, instanceOf(ReflectiveGenericLifecycleObserver.class)); }
@Test public void testInterfaceImpl1NoGeneratedAdapter() { GenericLifecycleObserver callback = Lifecycling.getCallback(new InterfaceImpl1()); assertThat(callback, instanceOf(SingleGeneratedAdapterObserver.class)); }
@Test public void testInterfaceImpl2NoGeneratedAdapter() { GenericLifecycleObserver callback = Lifecycling.getCallback(new InterfaceImpl2()); assertThat(callback, instanceOf(CompositeGeneratedAdaptersObserver.class)); }
@Test public void testInterfaceImpl3NoGeneratedAdapter() { GenericLifecycleObserver callback = Lifecycling.getCallback(new InterfaceImpl3()); assertThat(callback, instanceOf(CompositeGeneratedAdaptersObserver.class)); }
@Test public void testDerivedSequence() { GenericLifecycleObserver callback2 = Lifecycling.getCallback(new DerivedSequence2()); assertThat(callback2, instanceOf(ReflectiveGenericLifecycleObserver.class)); GenericLifecycleObserver callback1 = Lifecycling.getCallback(new DerivedSequence1()); assertThat(callback1, instanceOf(SingleGeneratedAdapterObserver.class)); }