code: public com.google.api.ads.admanager.axis.v201808.PremiumAdjustmentType getAdjustmentType() {
          return adjustmentType;
      }
docs: Gets the adjustmentType value for this PremiumRateValue.
  
  @return adjustmentType   * Whether the premium rate value is a percentage or absolute
  value to the
  product rate.
  
  This attribute is required.