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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def refresh_session(self, session=None):
 """Return updated session if token has expired, attempts to refresh using newly acquired token. If a session object is provided, configure it directly. Otherwise, create a new session and return it. :param session: The session to configure for authentication :type session: requests.Session :rtype: requests.Session. """

        if 'refresh_token' in self.token:
            try:
                token = self._context.acquire_token_with_refresh_token(
                    self.token['refresh_token'],
                    self.id,
                    self.resource,
                    self.secret # This is needed when using Confidential Client
                )
                self.token = self._convert_token(token)
            except adal.AdalError as err:
                raise_with_traceback(AuthenticationError, "", err)
        return self.signed_session(session)