@Test
public void testGetContentSha1EvenIfUnverifiedOrNull_andActuallyUnverified() {

    final B2Headers headers = B2HeadersImpl
            .builder()
            .set(B2Headers.CONTENT_SHA1, "unverified:" + SAMPLE_SHA1)
            .build();
    assertEquals(SAMPLE_SHA1, headers.getContentSha1EvenIfUnverifiedOrNull());
    assertNull(makeEmpty().getContentSha1OrNull());
}