Summary: Learn how to create a nested PowerShell custom object.
How do I create a nested PowerShell custom object to store layers (nested) of information?
Use a hashtable with the PSCustomObject type accelerator, and specify PSCustomObject as the value to the Property Name (Key):
[PSCustomObject]@{
PropertyName = [PSCustomObject]@{ NestedPropertyName = ‘NestedPropertyValue’ }
}