code: public com.google.api.ads.admanager.axis.v201811.CreativePlaceholder[] getCreativePlaceholders() {
          return creativePlaceholders;
      }
docs: Gets the creativePlaceholders value for this BuyerRfp.
  
  @return creativePlaceholders   * A list of inventory sizes in which creatives will be eventually
  served.
  <span class="constraint ReadOnly">This attribute is
  read-only when:<ul><li>using programmatic guaranteed, not using sales
  management.</li><li>using preferred deals, not using sales management.</li></ul></span>