case PutListResource.FILE_UC:
case PutListResource.FILE_PB:
case PutListResource.FILE_DEL:
return null;
case PutListResource.FILE_MG:
Reply msg = request.makeReply(HTTP.CONFLICT);
HtmlGenerator g = getHtmlGenerator("Warning");
g.append ("<H1>Warning</H1> The file on publish space has "+
"been modified directly but attempting to merge "+
"has succeed.<p>"+
"You should update the file before editing "+