code: public void setSpendTarget(com.google.api.ads.adwords.axis.v201809.cm.Money spendTarget) {
          this.spendTarget = spendTarget;
      }
docs: Sets the spendTarget value for this TargetSpendBiddingScheme.
  
  @param spendTarget   * A spend target under which to maximize clicks. The TargetSpend
  bidder will
  attempt to spend the smaller of this value or
  the natural throttling spend
  amount. If not specified, the budget is used as
  the spend target.
  <span class="constraint InRange">This field must
  be greater than or equal to 0.</span>