writeLoggedFlushedResponse("420 no current article has been selected");
} else if ( currentArticleNumber <= group.getFirstArticleNumber() ) {
writeLoggedFlushedResponse("422 no previous article in this group");
} else {
currentArticleNumber--;
NNTPArticle article = group.getArticle(currentArticleNumber);
StringBuffer respBuffer =
new StringBuffer(64)
.append("223 ")
.append(article.getArticleNumber())
.append(" ")
.append(article.getUniqueID());
writeLoggedFlushedResponse(respBuffer.toString());
}
}