code: public com.google.api.ads.admanager.axis.v201808.PricingModel getRateCardPricingModel() {
          return rateCardPricingModel;
      }
docs: Gets the rateCardPricingModel value for this ProposalLineItem.
  
  @return rateCardPricingModel   * {@link RateCard} pricing model for the {@link ProposalLineItem}.
  When the pricing model is
  {@link PricingModel#NET} refer to the {@link netCost}
  and {@link netRate} fields. When the
  pricing model is {@link PricingModel#GROSS} refer
  to the {@link grossCost} and
  {@link grossRate} fields.
  <span class="constraint Applicable">This attribute
  is applicable when:<ul><li>using programmatic guaranteed, using sales
  management.</li><li>not using programmatic, using sales management.</li></ul></span>
  <span class="constraint ReadOnly">This attribute is read-only when:<ul><li>using
  programmatic guaranteed, using sales management.</li><li>not using
  programmatic, using sales management.</li></ul></span>