public void extend(DateRange dr) {
    boolean localEmpty = isEmpty;
    if (localEmpty || dr.getStart().before(getStart()))
      setStart(dr.getStart());
    if (localEmpty || getEnd().before(dr.getEnd()))
      setEnd(dr.getEnd());
  }
public void extend(DateRange dr) {
    boolean localEmpty = isEmpty;
    if (localEmpty || dr.getStart().before(getStart()))
      setStart(dr.getStart());
    if (localEmpty || getEnd().before(dr.getEnd()))
      setEnd(dr.getEnd());
  }
public void extend ( DateRange dr ) { boolean localEmpty = isEmpty ; if ( localEmpty || dr . getStart ( ) . before ( getStart ( ) ) ) setStart ( dr . getStart ( ) ) ; if ( localEmpty || getEnd ( ) . before ( dr . getEnd ( ) ) ) setEnd ( dr . getEnd ( ) ) ; }
Extend this date range by the given one.

@param dr given DateRange
Extend this date range by the given one .