code: public static ProductChannelExclusivity createChannelExclusivity(
        @Nullable ShoppingProductChannelExclusivity channelExclusivity) {
      ProductChannelExclusivity productChannelExclusivity = new ProductChannelExclusivity();
      productChannelExclusivity.setChannelExclusivity(channelExclusivity);
      return productChannelExclusivity;
    }
docs: Creates a new ProductChannelExclusivity.
  
  @param channelExclusivity may be null if creating an "other" dimension