Repro case for Type Problem

TestScript.ps1

#requires -Module TypeTest
using module TypeTest

invoke-command { Set-Key $args } -args (Get-Key) -ComputerName .

TypeTest.psm1

enum Purpose {
    Identity = 1
    Permissions = 2
    Comments = 4
}
class KeyInfo {
    [string]$Name
    [Purpose]$Purpose
    [string]$RsaKeyXml
}

function Set-Key{
    [CmdletBinding()]
    param([KeyInfo]$Key) 
    Write-Host "doing things with your $($key.Name)"
    
}
function Get-Key{
    [CmdletBinding()]
    param([KeyInfo]$Key)
    [KeyInfo]@{Name = $Env:UserName}
}