public function validateFile(File $file, $sourceFilePath = null)
	{
		$result = $this->checkList($file->getExtension());
		
		if( ! $result) {
			$message = 'File extension "'.$file->getExtension().'" is not allowed';
			
			throw new Exception\UploadFilterException(self::EXCEPTION_MESSAGE_KEY, $message);
		}
	}