def METHOD_NAME(self):
    context = standard.RetryContext(
        attempt_number=1,
        operation_model=create_fake_op_model('s3'),
        parsed_response={
            'Error': {
                'Code': 'IDPCommunicationError',
                'Message': 'message',
            }
        },
        http_response=AWSResponse(
            status_code=400, raw=None, headers={}, url='https://foo'
        ),
        caught_exception=None,
    )
    self.assertFalse(self.checker.is_retryable(context))