function fetchNewsletterTypeList()
 {
     $extension = 'eznewsletter';
     $base = eZExtension::baseDirectory();
     $baseDir = "{$base}/{$extension}/classes/";
     return array('result' => eZNewsletterType::fetchList());
 }
 function fetchNewsletterTypeList($useFilter)
 {
     $extension = 'eznewsletter';
     $base = eZExtension::baseDirectory();
     $baseDir = "{$base}/{$extension}/classes/";
     return array('result' => eZNewsletterType::fetchList(eZNewsletterType::StatusPublished, true, $useFilter));
 }