/**
  * 
  * @return void
  */
 private function ProcessFileContent()
 {
     $objPHPExcel = PHPExcel_IOFactory::load($this->file);
     // Loop over all worksheets
     foreach ($objPHPExcel->getWorksheetIterator() as $worksheet) {
         try {
             // First check if there is an interface with the same id as the worksheet
             $ifc = InterfaceObject::getInterfaceByLabel($worksheet->getTitle());
             $parseWithIfc = true;
         } catch (Exception $e) {
             $this->logger->warning("No interface found with name as title of worksheet '{$worksheet->getTitle()}'. Parsing file without interface");
             $parseWithIfc = false;
         }
         if ($parseWithIfc) {
             $this->ParseWorksheetWithIfc($worksheet, $ifc);
         } else {
             $this->ParseWorksheet($worksheet);
         }
     }
 }