Best way to create and/or import existing lab in single script?

[paschott]

Not sure how best to phrase this. The examples all show how to create a lab and I've found those really helpful. Is there then a way to build my script in such a way that I could "continue" building out my lab from wherever I left off?

e.g., I've created a lab with a single server. I save it, have to quit/restart/whatever. I want to continue where I left off and ideally do that in the same script that I could then give to others. So I'd do all of the "New-*" commands, but what would be the equivalent to "create if not exists" that I could use for that setup on a different machine - or perhaps the other way around "import if exists"?

Would it be something like the following?
$lab = Import-Lab MyLab
If ($lab -eq $null) {
New-Lab MyLab
}