@Test
public void shouldConvertHexString() {

    byte[] bytes = HexConverter.convertFromHex("00010A0B0F106364657F8081FF");
    assertThat(bytes).isEqualTo(new byte[]{ 0, 1, 10, 11, 15, 16, 99, 100, 101, 127, -128, -127, -1 });
}