public function test_parse_leapSecond()
 {
     $expected = OffsetDateTime::of(1970, 2, 3, 23, 59, 59, 123456789, ZoneOffset::UTC())->toInstant();
     $f = (new DateTimeFormatterBuilder())->appendInstant4(-1)->toFormatter();
     foreach (ResolverStyle::values() as $style) {
         $pared = $f->withResolverStyle($style)->parse("1970-02-03T23:59:60.123456789Z");
         $this->assertEquals($pared->query(Instant::fromQuery()), $expected);
         $this->assertEquals($pared->query(DateTimeFormatter::parsedExcessDays()), Period::ZERO());
         $this->assertEquals($pared->query(DateTimeFormatter::parsedLeapSecond()), true);
     }
 }