VSTS Mark a build as retain idenfinitely (powershell)

vsts-retain-indefinitely.ps1

$buildId = $env:BUILD_BUILDID # the currently running build
"Build ID: $buildId"

$keepforever = @{
	keepforever='true'
}

$jsonKeepForever = $keepforever | ConvertTo-Json -Depth 100

$uriForBuildUpdate = "$($env:SYSTEM_TEAMFOUNDATIONCOLLECTIONURI)$($env:SYSTEM_TEAMPROJECTID)/_apis/build/builds/" + $buildID + "?api-version=2.0"

$result = Invoke-RestMethod -Uri $uriForBuildUpdate -Method Patch -Body $jsonKeepForever -ContentType "application/json" -Headers @{ Authorization = "Bearer $env:SYSTEM_ACCESSTOKEN" }

Write-Verbose "Result: $result" -Verbose

"********************************"
"Build set to retain indefinitely"
"********************************"