static public CalendarDateRange of(DateRange dr) {
    if (dr == null) return null;
    return CalendarDateRange.of( dr.getStart().getDate(), dr.getEnd().getDate());
  }
static public CalendarDateRange of(DateRange dr) {
    if (dr == null) return null;
    return CalendarDateRange.of( dr.getStart().getDate(), dr.getEnd().getDate());
  }
static public CalendarDateRange of ( DateRange dr ) { if ( dr == null ) return null ; return CalendarDateRange . of ( dr . getStart ( ) . getDate ( ) , dr . getEnd ( ) . getDate ( ) ) ; }
Does not handle non-standard calendars
@deprecated
Does not handle non - standard calendars