public boolean equals(@Nullable Object obj) {
      if (obj instanceof SameShortInstance) {
        SameShortInstance that = (SameShortInstance) obj;
        return i == that.i;
      }
      return false;
    }
  }

  static class SameByteInstance {
    private final Byte i;

    public SameByteInstance(Byte i) {
      this.i = checkNotNull(i);
    }