code: public static PublishNotify createPublishNotify(Identifier i1,
  			Collection<Document> mdlist) {
  		return createPublishNotify(i1, null, mdlist);
  	}
docs: Create a new {@link PublishNotify} instance that is used to publish
  a list of metadata instances.
  
  @param i1 the {@link Identifier} to which the given metadata is published to
  @param mdlist a list of metadata objects
  @return the new {@link PublishNotify} instance