code: public void setDeliveryRateType(com.google.api.ads.admanager.axis.v201811.DeliveryRateType deliveryRateType) {
          this.deliveryRateType = deliveryRateType;
      }
docs: Sets the deliveryRateType value for this LineItemSummary.
  
  @param deliveryRateType   * The strategy for delivering ads over the course of the line
  item's duration. This attribute is
  optional and defaults to {@link DeliveryRateType#EVENLY}
  or
  {@link DeliveryRateType#FRONTLOADED} depending on
  the network's configuration.