Shorten URL using goo.gl

Get-GoogleShortURL.ps1

function Get-GoogleShortURL {
param(
    [Parameter(Mandatory, ValueFromPipeline)]
    [ValidateScript({
        [System.Uri]::TryCreate($_, [System.UriKind]::RelativeOrAbsolute , [ref]$_)
    })]
    [string]$longUrl
)
    PROCESS
    {
        $SystemWebProxy = [System.Net.WebRequest]::GetSystemWebProxy()

        $WebRequest = @{
            'Uri'         = 'https://www.googleapis.com/urlshortener/v1/url'
            'Method'      = [System.Net.WebRequestMethods+Http]::Post
            'Body'        = '{"longUrl": "' + $longUrl + '"}'
            'ContentType' = 'application/json'
        }
        if (!$SystemWebProxy.IsBypassed($WebRequest.Uri)) {
            $Proxy = $SystemWebProxy.GetProxy($WebRequest.Uri)
            $WebRequest.Add('Proxy',$Proxy.AbsoluteUri)
            $WebRequest.Add('ProxyUseDefaultCredentials',$true)
        }
        $Response = Invoke-WebRequest @WebRequest
        if ($Response.statusCode -eq 200) {
            $Content = ConvertFrom-Json $Response.Content
            Write-Output $Content
        }
    }
}