code: public void setPrimaryGoal(com.google.api.ads.admanager.axis.v201808.Goal primaryGoal) {
          this.primaryGoal = primaryGoal;
      }
docs: Sets the primaryGoal value for this LineItemSummary.
  
  @param primaryGoal   * The primary goal that this {@code LineItem} is associated with,
  which is used in its pacing and
  budgeting.