}
  }

  public static class BadNulls {
    public void failsToRejectNull(@SuppressWarnings("unused") String s) {}
  }

  public static class NoNullCheckNeededDespiteNotInstantiable {

    public NoNullCheckNeededDespiteNotInstantiable(NotInstantiable x) {
      checkNotNull(x);
    }

    @Keep
    void primitiveOnly(int i) {}

    @Keep