public void HashValue_AsHexString_ExpectedValue()
        {
            var hashValue = new HashValue(new byte[] { 173, 0, 255 }, 24);

            Assert.Equal(
                "ad00ff",
                hashValue.AsHexString());

            Assert.Equal(
                "ad00ff",
                hashValue.AsHexString(false));

            Assert.Equal(
                "AD00FF",
                hashValue.AsHexString(true));
        }