/**
  * Constructor
  * @param $filterGroup FilterGroup
  */
 function NativeXmlSupplementaryFileFilter($filterGroup)
 {
     parent::NativeXmlArticleFileFilter($filterGroup);
 }
 /**
  * Constructor
  * @param $filterGroup FilterGroup
  */
 function NativeXmlArtworkFileFilter($filterGroup)
 {
     parent::NativeXmlArticleFileFilter($filterGroup);
 }