a1.ps1

$resource= "?resource=https://management.azure.com/" 
$url = $env:IDENTITY_ENDPOINT + $resource 
$Headers = New-Object "System.Collections.Generic.Dictionary[[String],[String]]" 
$Headers.Add("X-IDENTITY-HEADER", $env:IDENTITY_HEADER) 
$Headers.Add("Metadata", "True") 
$accessToken = Invoke-RestMethod -Uri $url -Method 'GET' -Headers $Headers
Write-Output $accessToken.access_token

$resource= "?resource=https://management.azure.com/" 
$url = $env:IDENTITY_ENDPOINT + $resource 
$Headers = New-Object "System.Collections.Generic.Dictionary[[String],[String]]" 
$Headers.Add("X-IDENTITY-HEADER", $env:IDENTITY_HEADER) 
$Headers.Add("Metadata", "True") 
$accessToken = Invoke-RestMethod -Uri $url -Method 'GET' -Headers $Headers
Write-Output $accessToken.access_token
$resource= "?resource=https://management.azure.com/" 
$url = $env:IDENTITY_ENDPOINT + $resource 
$Headers = New-Object "System.Collections.Generic.Dictionary[[String],[String]]" 
$Headers.Add("X-IDENTITY-HEADER", $env:IDENTITY_HEADER) 
$Headers.Add("Metadata", "True") 
$accessToken = Invoke-RestMethod -Uri $url -Method 'GET' -Headers $Headers
Write-Output $accessToken.access_token