async def METHOD_NAME(
    app: FastAPI,
    ec2_client: EC2Client,
    user_id: UserID,
    wallet_id: WalletID,
) -> list[EC2InstanceData]:
    created_clusters = await create_cluster(app, user_id=user_id, wallet_id=wallet_id)
    assert len(created_clusters) == 1
    # check we do have a new machine in AWS
    await _assert_cluster_instance_created(ec2_client, user_id, wallet_id)
    return created_clusters