Listing 3: Copy-WebFile.ps1

Param(
# ******* BEGIN CALLOUT A *******
  [System.Uri]$uri,
# ******* END CALLOUT A *******

# ******* BEGIN CALLOUT B *******
  [string]$targetname = 
    (Join-Path (Get-Location -PSProvider FileSystem) $uri.Segments[$uri.Segments.Count - 1])
# ******* END CALLOUT B *******
)

# ******* BEGIN CALLOUT C *******
(New-Object System.Net.WebClient).DownloadFile($uri, $targetname)
# ******* END CALLOUT C *******