code: @Override
  	protected Revision readRevision()
  		throws IOException, ArticleReaderException
  	{
  
  		Revision rev = super.readRevision();
  		this.readRevisionCounter++;
  		return rev;
  	}
docs: Reads a single revision from an article.
  
  @return Revision
  
  @throws IOException
  if an error occurs while reading from the input
  @throws ArticleReaderException
  if an error occurs while parsing the input