public final void setUnits(final String units) {
    if (!this.units.equals(units)) {
      changed.put("units", true);
      this.units = units;
    }
  }
public final void setUnits ( final String units ) { if ( ! this . units . equals ( units ) ) { changed . put ( "units" , true ) ; this . units = units ; } }
@param units optional units designation