@Override
 public int hashCode() {
   final int prime = super.hashCode();
   int result = 1;
   result = prime * result + ((bundleOrderItem == null) ? 0 : bundleOrderItem.hashCode());
   result = prime * result + ((sku == null) ? 0 : sku.hashCode());
   return result;
 }
  @Override
  public boolean equals(Object obj) {
    if (this == obj) {
      return true;
    }
    if (obj == null) {
      return false;
    }
    if (getClass() != obj.getClass()) {
      return false;
    }
    DiscreteOrderItemImpl other = (DiscreteOrderItemImpl) obj;

    if (!super.equals(obj)) {
      return false;
    }

    if (id != null && other.id != null) {
      return id.equals(other.id);
    }

    if (bundleOrderItem == null) {
      if (other.bundleOrderItem != null) {
        return false;
      }
    } else if (!bundleOrderItem.equals(other.bundleOrderItem)) {
      return false;
    }
    if (sku == null) {
      if (other.sku != null) {
        return false;
      }
    } else if (!sku.equals(other.sku)) {
      return false;
    }
    return true;
  }