### Question:
DateTimes { public static String toStringWithTimeZone(DateTime dateTime) { return dateTimesHelper.toStringWithTimeZone(dateTime); } private  DateTimes(); static DateTime toDateTime(Calendar calendar); static DateTime toDateTime(Instant instant, String timeZoneId); static DateTime toDateTime(org.joda.time.DateTime dateTime); static DateTime toDateTime(String dateTime, String timeZoneId); static DateTime toDateTimeWithTimeZone(String dateTime); static org.joda.time.DateTime toDateTime(DateTime dateTime); static Calendar toCalendar(DateTime dateTime); static Calendar toCalendar(DateTime dateTime, Locale locale); static String toString(Date date); static String toString(DateTime dateTime); static String toStringWithTimeZone(DateTime dateTime); static String toStringForTimeZone(DateTime dateTime, String newZoneId);  }### Answer:
@Test public void testToStringWithTimeZone_fromApiDateTime() { Assert.assertEquals(stringDateTimeWithTimeZone1, DateTimes.toStringWithTimeZone(apiDateTime1)); Assert.assertEquals(stringDateTimeWithTimeZone2, DateTimes.toStringWithTimeZone(apiDateTime2)); Assert.assertEquals(stringDateTimeWithTimeZone3, DateTimes.toStringWithTimeZone(apiDateTime3)); }