Backgrounding tasks in PowerShell classes using either the PoshRSJob and ThreadJob module

Backgrounder.Class Examples.ps1

class Backgrounder {
    [string[]] $Updates
    Backgrounder(){}
    [void] AddUpdate([string]$update) {
        $this.Updates += $update
    }
    [void] Update() {
        1..5 | ForEach-Object {
            # ThreadJob
            Start-ThreadJob -Name {$_} -ArgumentList $_ -ScriptBlock {
                Param($item)
                # Can't use $using:this.Updates with assignment operator. Error: The input to an assignment operator must be an object that is able to accept assignments, such as a variable or a property.
                # Access by reassigning $using:this to local variable $class.
                # Tried reassigning back to $this, but it appears to break the AddUpdate() method call usage for both ThreadJob and RSJob completely
                $class = $using:this
                $class.Updates += "ThreadJob via indirect assignment operator: $item"
                # Can't use setter method either directly on $using:this. Error: Expression is not allowed in a Using expression.
                $class.AddUpdate("ThreadJob via indirect AddUpdate method: $item")
            }
            # RSJob
            Start-RSJob -Name {$_} -VariablesToImport 'this' -ArgumentList $_ -ScriptBlock {
                Param($item)
                # Direct usage of $this
                $this.Updates += "RSJob via `$this assignment operator: $item"
                $this.AddUpdate("RSJob via  `$this.AddUpdate method: $item")
            }
        }
        Start-Sleep 10
    }
}
$backgrounder = [Backgrounder]::new()
$backgrounder
$backgrounder.Update()
$backgrounder.Updates

<# OUTPUT
PS > $backgrounder = [Backgrounder]::new()
PS > $backgrounder

Updates
-------


PS > $backgrounder.Update()
PS > $backgrounder.Updates
ThreadJob via indirect assignment operator: 1
ThreadJob via indirect AddUpdate method: 1
RSJob via $this assignment operator: 1
RSJob via  $this.AddUpdate method: 1
ThreadJob via indirect assignment operator: 2
ThreadJob via indirect AddUpdate method: 2
RSJob via $this assignment operator: 2
RSJob via  $this.AddUpdate method: 2
ThreadJob via indirect assignment operator: 3
ThreadJob via indirect AddUpdate method: 3
RSJob via $this assignment operator: 3
RSJob via  $this.AddUpdate method: 3
ThreadJob via indirect assignment operator: 4
ThreadJob via indirect AddUpdate method: 4
RSJob via $this assignment operator: 4
RSJob via  $this.AddUpdate method: 4
ThreadJob via indirect assignment operator: 5
ThreadJob via indirect AddUpdate method: 5
RSJob via $this assignment operator: 5
RSJob via  $this.AddUpdate method: 5
#>