public int addAdjustment(GenericValue adjustment){
  adjustments.add(adjustment);
  return adjustments.indexOf(adjustment);
}

public int addAdjustment ( GenericValue adjustment ) { adjustments . add ( adjustment ) ; return adjustments . indexOf ( adjustment ) ; }
add an adjustment to the order ; don ' t worry about setting the orderid , orderitemseqid or orderadjustmentid ; they will be set when the order is created
