@Test
public void testProvidersMbw() {
ServiceLocator locator = Injections.createLocator(initBinders());
ProviderBinder providerBinder = new ProviderBinder(locator);
providerBinder.bindClasses(Sets.<Class<?>>newHashSet(MyProvider.class));
Set<MessageBodyWriter> providers = Providers.getCustomProviders(locator, MessageBodyWriter.class);
final Collection<MyProvider> myProviders = instancesOfType(MyProvider.class, providers);
assertEquals(1, myProviders.size());
}