code: public void setDeliveryData(com.google.api.ads.admanager.axis.v201808.DeliveryData deliveryData) {
          this.deliveryData = deliveryData;
      }
docs: Sets the deliveryData value for this LineItemSummary.
  
  @param deliveryData   * Delivery data provides the number of clicks or impressions
  delivered for a
  {@link LineItem} in the last 7 days. This attribute
  is readonly and is
  populated by Google. This will be {@code null} if
  the delivery data cannot
  be computed due to one of the following reasons:
  <ol>
  <li>
  The line item is not deliverable.</li>
  <li>
  The line item has completed delivering more than 7
  days ago.</li>
  <li>
  The line item has an absolute-based goal.
  {@link LineItem#deliveryIndicator} should be used
  to track its
  progress in this case.</li>