Sparx Enterprise architect Create baseline using powershell - powershell-2.0

Question

I want to automatically create a baseline for each project in my enterprise architect project using PowerShell.
How do you create a baseline from PowerShell?
My code so far gets all the models IE high-level packages for which I want to create a new baseline.
$conString = "private connection string"
## implementation do not chage
add-type -path “C:\Program Files (x86)\Sparx Systems\ea\Interop.EA.dll”
$ea = New-Object -ComObject EA.Repository
$ea.OpenFile($conString);
function Process-Packages($packages)
{
if(!$packages) { throw [System.ArgumentNullException]::new('packages'); }
if(0 -ge $packages.Count) { return; }
## create a baseline for each package
}
foreach($model in $ea.models)
{
Process-Packages $model.packages;
}
$ea.CloseFile();
$ea.Exit();
Update:
While using VS I have found the object I am looking for is under EA.ProjectClass
which is exposing the relevant functionality to create a package:
public virtual bool CreateBaseline(string PackageGUID, string Version, string Notes)
Member of EA.ProjectClass
Summary:
Creates a baseline on the specified package.
Attributes:
[System.Runtime.InteropServices.DispIdAttribute(66)]
and there is relative implementation to getbaselines
public virtual string GetBaselines(string PackageGUID, string ConnectString)
Member of EA.ProjectClass
Summary:
Returns an xml string containing the list of guids available for that package.
Attributes:
[System.Runtime.InteropServices.DispIdAttribute(65)]

Answer 1

Ok after going through internet dll's I have found an anwer to my question.
The solution is rather simple, but getting there was painful.
Please note, not all fields such as Author are populated and additional work is required to make it fully usable solution. This process does bypass configured security for packages.
RAW Implementation of the script
add-type -path “C:\Program Files (x86)\Sparx Systems\ea\Interop.EA.dll”
$ea = New-Object -ComObject EA.Repository
$ea.OpenFile("private db connection string");
foreach($model in $ea.models)
{
$eaProject = $ea.GetProjectInterface()
$eaProject.CreateBaseline($model.PackageGUID,"9.9.9","PowerShell generated")
}
$ea.CloseFile();
$ea.Exit();
Processing info
As mentioned in comments it is time consuming process. For me running this PowerShell on 22k objects it takes about an hour on i3 intel / 4GB RAM