@Test
public void eightCM() {

    Assert.assertEquals(RxComprehensions
            .doConcatMap(zero(1), one(true), two("result"), three("other"), four("other".length()),
                    five("other".length() < 5), six(Boolean.toString(false)), seven("true"), eight(Long.class))
            .toBlocking().first(), Long.class);
}