code: public void setSizes(com.google.api.ads.admanager.axis.v201902.Size[] sizes) {
          this.sizes = sizes;
      }
docs: Sets the sizes value for this LineItemCreativeAssociation.
  
  @param sizes   * Overrides the value set for {@link Creative#size}, which allows
  the
  creative to be served to ad units that would otherwise
  not be compatible
  for its actual size. This value is optional.