code: public void setCustomCreativeAssets(com.google.api.ads.admanager.axis.v201811.CustomCreativeAsset[] customCreativeAssets) {
          this.customCreativeAssets = customCreativeAssets;
      }
docs: Sets the customCreativeAssets value for this CustomCreative.
  
  @param customCreativeAssets   * A list of file assets that are associated with this creative,
  and can be
  referenced in the snippet.