How to use the normality.encoding.normalize_result function in normality

def read_file_decoded(self, file_path):
        encoding = self.result.encoding
        with open(file_path, 'rb') as fh:
            body = fh.read()
            if encoding is None:
                result = chardet.detect(body)
                encoding = normalize_result(result, self.DEFAULT_ENCODING)

        try:
            body = body.decode(encoding)
            if encoding != self.DEFAULT_ENCODING:
                log.info("Decoding [%s] as: %s", self.result, encoding)
            return body
        except UnicodeDecodeError as ude:
            raise ProcessingException('Error decoding file as %s: %s' %
                                      (encoding, ude))

def detect_list_encoding(self, items, default=DEFAULT_ENCODING):
        detector = chardet.UniversalDetector()
        for text in items:
            if not isinstance(text, bytes):
                continue
            detector.feed(text)
            if detector.done:
                break

        detector.close()
        return normalize_result(detector.result, default)

def detect_list_encoding(self, items, default=DEFAULT_ENCODING):
        detector = chardet.UniversalDetector()
        for text in items:
            if not isinstance(text, bytes):
                continue
            detector.feed(text)
            if detector.done:
                break

        detector.close()
        return normalize_result(detector.result, default)