public function test_ofLocalizedDateTime2_basics()
 {
     $this->assertEquals(DateTimeFormatter::ofLocalizedDateTimeSplit(FormatStyle::FULL(), FormatStyle::MEDIUM())->getChronology(), IsoChronology::INSTANCE());
     $this->assertEquals(DateTimeFormatter::ofLocalizedDateTimeSplit(FormatStyle::FULL(), FormatStyle::MEDIUM())->getZone(), null);
     $this->assertEquals(DateTimeFormatter::ofLocalizedDateTimeSplit(FormatStyle::FULL(), FormatStyle::MEDIUM())->getResolverStyle(), ResolverStyle::SMART());
 }