code: def load_first(auth=None):
          
          if auth is None:
              auth = ClusterAuth.DEFAULT
          elif isinstance(auth, ClusterAuth):
              auth = [auth]
          elif isinstance(auth, list):
              if not auth:
                  raise kubernetes.config.ConfigException('No authorization methods were provided')
          else:
              msg = ("Invalid authorization method provided. See ClusterAuth "
                     "docstring for ways to specify authentication methods")
              raise ValueError(msg)
  
          auth_exc = None
          for auth_instance in auth:
              try:
                  auth_instance.load()
              except kubernetes.config.ConfigException as exc:
                  logger.debug('Failed to load configuration with %s method: %s', auth_instance.__class__, exc)
                  auth_exc = exc
              else:
                  break
          else:
              raise auth_exc
docs: Load the first valid configuration in the list *auth*. A single
          configuration method can be passed.
  
          Parameters
          ----------
  
          auth: List[ClusterAuth] (optional)
              Configuration methods to attempt in order.  Defaults to
              ``[InCluster(), KubeConfig()]``.