Is it possible to call an function nested in another function (PowerShell)?

I’m very used to Python where functions can be put in classes and called separately.

However, now I have to code something in PowerShell and I can’t find a way if something similar would be possible here.

methods
nested
pow
powershell
shell
sse

An example of what I’m trying to do:

function a {
    Write-Host "a"

    function a_1() { Write-Host "a_1" }

    function a_2() { Write-Host "a_2" }
    
}

a      # Works
a.a_1  # Doesn't works
a_2    # Doesn't works

>Solution :

PowerShell (5 and above) does have support for classes, (see about_Classes) and class methods can be static.

So for example:

class a {
    a() {
        Write-Host "a"
    }
    static [void]a_1()
    {
        Write-Host "a_1"
    }
    static [void]a_2()
    {
        Write-Host "a_2"
    }
}

[a]$a = [a]::new()
[a]::a_1()
[a]::a_2()

Output: