public static Find find(String regex) {
    return find(regex, 0);
  }
@Test
  @Category(NeedsRunner.class)
  public void testFindNameNone() {
    PCollection<String> output =
        p.apply(Create.of("a", "b", "c", "d"))
            .apply(Regex.find("(?<namedgroup>[xyz])", "namedgroup"));

    PAssert.that(output).empty();
    p.run();
  }