### Question:
ActorService extends ActorBase { public static Builder builder() { return new Builder(); } ActorService(Builder builder); String getActorServiceName(); static Builder builder(); @Override String toString();  }### Answer:
@Test void emptyBuilderConstructionTest() { ThrowingCallable constructor = () -> ActorService.builder().build(); assertConstruction(constructor, false, NullPointerException.class, null); }