code: public com.google.api.ads.adwords.axis.v201809.cm.Money getTargetCpa() {
          return targetCpa;
      }
docs: Gets the targetCpa value for this TargetCpaBiddingScheme.
  
  @return targetCpa   * Average cost per acquisition (CPA) target. This target should
  be greater than or equal to
  minimum billable unit based on the currency for
  the account.