### Question:
Nonstop implements HolidayCalendar { @Override public boolean isHoliday (Calendar day) { return false; }  @Override boolean isHoliday(Calendar day); @Override boolean isWorkingHours(Instant time); @Override int getStartOfDay(); @Override int getEndOfDay(); @Override boolean isBeforeWorkingHours(Calendar from); @Override boolean isWeekend(Calendar from);  }### Answer:
@Test public void isHoliday () { assertFalse(calendar.isHoliday(getDate(2018, Calendar.DECEMBER, 24))); }