/**
  * This method behaves as usual but prefers files from the "patch"
  * location over the "core" files of Stud.IP.
  *
  * @param  string     a template string
  *
  * @return string     an absolute filename
  *
  * @throws Flexi_TemplateNotFoundException  if the template could not be found
  */
 function get_template_file($template0)
 {
     try {
         return parent::get_template_file($template0);
     } catch (\Flexi_TemplateNotFoundException $e) {
         return $this->core_factory->get_template_file($template0);
     }
 }