code: def get_msi_token(resource, port=50342, msi_conf=None):
      
      request_uri = os.environ.get("MSI_ENDPOINT", 'http://localhost:{}/oauth2/token'.format(port))
      payload = {
          'resource': resource
      }
      if msi_conf:
          if len(msi_conf) > 1:
              raise ValueError("{} are mutually exclusive".format(list(msi_conf.keys())))
          payload.update(msi_conf)
  
      try:
          result = requests.post(request_uri, data=payload, headers={'Metadata': 'true'})
          _LOGGER.debug("MSI: Retrieving a token from %s, with payload %s", request_uri, payload)
          result.raise_for_status()
      except Exception as ex:  # pylint: disable=broad-except
          _LOGGER.warning("MSI: Failed to retrieve a token from '%s' with an error of '%s'. This could be caused "
                          "by the MSI extension not yet fully provisioned.",
                          request_uri, ex)
          raise
      token_entry = result.json()
      return token_entry['token_type'], token_entry['access_token'], token_entry
docs: Get MSI token if MSI_ENDPOINT is set.
  
      IF MSI_ENDPOINT is not set, will try legacy access through 'http://localhost:{}/oauth2/token'.format(port).
  
      If msi_conf is used, must be a dict of one key in ["client_id", "object_id", "msi_res_id"]
  
      :param str resource: The resource where the token would be use.
      :param int port: The port if not the default 50342 is used. Ignored if MSI_ENDPOINT is set.
      :param dict[str,str] msi_conf: msi_conf if to request a token through a User Assigned Identity (if not specified, assume System Assigned)