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

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