code: def get_headers(self):
          
  
          try:
              return {
                  'X-Auth-User': self.job_args['os_user'],
                  'X-Auth-Key': self.job_args['os_apikey']
              }
          except KeyError as exp:
              raise exceptions.AuthenticationProblem(
                  'Missing Credentials. Error: %s',
                  exp
              )
docs: Setup headers for authentication request.