if( -not (Get-Command Join-String -ErrorAction SilentlyContinue) ) {
  if( -not (Get-Module -ListAvailable -Name "string") ) {
    Write-Warning 'Join-String Command is missing, attempting to install stirng module'
    $local:moduleScope = "CurrentUser"
    if( Test-IsAdmin ) { $moduleScope = "AllUsers" }
    Install-Module -Name "string" -Scope $moduleScope -AllowClobber -ErrorAction SilentlyContinue
  }
  if( -not (Get-Module -ListAvailable -Name "string") ) {
    Write-Error "Failed to locate/install the module 'string'"
  }
  Import-Module -Name "string" -Cmdlet "Join-String"
}