def _check_for_iam_endpoint(self, region, iam_endpoint):
     try:
         self._session.create_client('emr', region)
     except botocore.exceptions.UnknownEndpointError:
         if iam_endpoint is None:
             raise exceptions.UnknownIamEndpointError(region=region)
 def _check_for_iam_endpoint(self, region, iam_endpoint):
     try:
         self._session.get_service('emr').get_endpoint(region)
     except botocore.exceptions.UnknownEndpointError:
         if iam_endpoint is None:
             raise exceptions.UnknownIamEndpointError(region=region)