@Test
public void withInReplyTo() {

    Assert.assertEquals(
            MailToUri.builder()
                    .to(EmailAddress.builder().email("list@example.com").build())
                    .inReplyTo("<3469A91.D10AF4C@example.com>")
                    .build(),
            MailToUri.get("mailto:list@example.com?In-Reply-To=%3C3469A91.D10AF4C@example.com%3E")
    );
}