angular2 rc.4: How to inject mocked services (provide() is deprecated)

Since angular 2.0.0-rc.4 release (change log), both beforeEachProviders and provide are deprecated. My question is how can I inject my mocked service inside my component. Here is my beforeEach function which creates a ComponentFixture with overrided providers:

 beforeEach(async(inject([TestComponentBuilder], (tcb)=> {
   builder = tcb;
 })));

 beforeEach(async(inject([], ()=> {
   return builder
    .overrideProviders(MenubarComponent,[provide(MenubarService, {useClass:MenubarServiceMock})])
  .createAsync(MenubarTestComponent)
  .then((_fixture:ComponentFixture<any>)=> {
    fixture = _fixture;
  })
})));

This approach works fine but as I said provide is deprecated.

What is the right way to do this without using provide()?