$cfg->setConfigEntry('mailer_class', 'DebugMailer');
// CFG: XML-PARSER-CLASS
-$cfg->setConfigEntry('xml_parser_class', 'XmlParser');
+$cfg->setConfigEntry('xml_parser_class', 'CoreFramework\Parser\Xml\XmlParser');
// CFG: DECO-COMPACTING-XML-PARSER-CLASS
$cfg->setConfigEntry('deco_compacting_xml_parser_class', 'XmlCompactorDecorator');