def METHOD_NAME():
    client = boto3.client("rds", region_name="us-west-2")
    with pytest.raises(ClientError) as ex:
        client.start_export_task(
            ExportTaskIdentifier="export-snapshot-1",
            SourceArn=f"arn:aws:rds:us-west-2:{ACCOUNT_ID}:snapshot:snapshot-1",
            S3BucketName="export-bucket",
            IamRoleArn="",
            KmsKeyId="",
        )
    err = ex.value.response["Error"]
    assert err["Code"] == "DBSnapshotNotFound"
    assert err["Message"] == "DBSnapshot snapshot-1 not found."