/**
  * @param callBack How the parent is notified that the date is set.
  * @param year The initial year of the dialog.
  * @param monthOfYear The initial month of the dialog.
  * @param dayOfMonth The initial day of the dialog.
  */
 public static CalendarDatePickerDialog newInstance(
     OnDateSetListener callBack, int year, int monthOfYear, int dayOfMonth) {
   CalendarDatePickerDialog ret = new CalendarDatePickerDialog();
   ret.initialize(callBack, year, monthOfYear, dayOfMonth);
   return ret;
 }