ImmutableList<String> empty = ImmutableList.of();
    ImmutableList<String> a = ImmutableList.of("a");
    ImmutableList<String> aa = ImmutableList.of("a", "a");
    ImmutableList<String> ab = ImmutableList.of("a", "b");
    ImmutableList<String> b = ImmutableList.of("b");

    testComparator(lexy, empty, a, aa, ab, b);

    new EqualsTester()
        .addEqualityGroup(lexy, Comparators.lexicographical(comparator))

    }

    @Test
    public void testRecursiveExpressionCycleNPE() throws Exception {
        Map<String, String> props = new HashMap<>();
        props.put("aa", "${bb}");
        props.put("bb", "${aa}");
        DefaultModelBuildingRequest request = new DefaultModelBuildingRequest();

        Model model = Model.newBuilder().properties(props).build();

        assertThrows(IllegalArgumentException.class, () -> cli.calculateDegreeOfConcurrency("1."));
        assertThrows(IllegalArgumentException.class, () -> cli.calculateDegreeOfConcurrency("AA"));
        assertThrows(IllegalArgumentException.class, () -> cli.calculateDegreeOfConcurrency("C"));
        assertThrows(IllegalArgumentException.class, () -> cli.calculateDegreeOfConcurrency("C2.2C"));

    ImmutableList<String> empty = ImmutableList.of();
    ImmutableList<String> a = ImmutableList.of("a");
    ImmutableList<String> aa = ImmutableList.of("a", "a");
    ImmutableList<String> ab = ImmutableList.of("a", "b");
    ImmutableList<String> b = ImmutableList.of("b");

    testComparator(lexy, empty, a, aa, ab, b);

    new EqualsTester()
        .addEqualityGroup(lexy, ordering.lexicographical())

    ImmutableList<String> empty = ImmutableList.of();
    ImmutableList<String> a = ImmutableList.of("a");
    ImmutableList<String> aa = ImmutableList.of("a", "a");
    ImmutableList<String> ab = ImmutableList.of("a", "b");
    ImmutableList<String> b = ImmutableList.of("b");

    testComparator(lexy, empty, a, aa, ab, b);

    new EqualsTester()
        .addEqualityGroup(lexy, ordering.lexicographical())

t;if(!e.isValid()||!a.isValid())return{milliseconds:0,months:0};a=Ja(a,e),e.isBefore(a)?t=Ba(e,a):((t=Ba(a,e)).milliseconds=-t.milliseconds,t.months=-t.months);return t}(Ha(r.from),Ha(r.to)),(r={}).ms=n.milliseconds,r.M=n.months),s=new Wa(r),Aa(e)&&h(e,"_locale")&&(s._locale=e._locale),Aa(e)&&h(e,"_isValid")&&(s._isValid=e._isValid),s}function Va(e,a){var t=e&&parseFloat(e.replace(",","."));return(isNaN(t)?0:t)*a}function Ba(e,a){var t={};return t.months=a.month()-e.month()+12*(a.year()-e.year()),e.clone().add(...