def METHOD_NAME():
    client = boto3.client("rds", region_name="us-west-2")
    source_arn = _prepare_db_snapshot(client)
    export = client.start_export_task(
        ExportTaskIdentifier="export-snapshot-1",
        SourceArn=source_arn,
        S3BucketName="export-bucket",
        S3Prefix="snaps/",
        IamRoleArn="arn:aws:iam:::role/export-role",
        KmsKeyId="arn:aws:kms:::key/0ea3fef3-80a7-4778-9d8c-1c0c6EXAMPLE",
        ExportOnly=["schema.table"],
    )
    assert export["ExportTaskIdentifier"] == "export-snapshot-1"
    assert export["SourceArn"] == source_arn
    assert export["S3Bucket"] == "export-bucket"
    assert export["S3Prefix"] == "snaps/"
    assert export["IamRoleArn"] == "arn:aws:iam:::role/export-role"
    assert export["KmsKeyId"] == (
        "arn:aws:kms:::key/0ea3fef3-80a7-4778-9d8c-1c0c6EXAMPLE"
    )
    assert export["ExportOnly"] == ["schema.table"]
    assert export["SourceType"] == "SNAPSHOT"