}

  @SuppressWarnings("unused") // used by reflection
  private static class CanCreateDefault {
    @Keep
    public void foo(@Nullable HardToCreate ignored, String required) {
      checkNotNull(required);
    }
  }

  public void testCanCreateDefault() {
    shouldPass(new CanCreateDefault());
  }

  @SuppressWarnings("unused") // used by reflection