Check if an Azure Feature is registered for a subscription

AzFeatureCheck.ps

Write-Output "Verifying required Resource Providers Features are registered"
$featureName='EnableOIDCIssuerPreview'
$aksfeature = az feature list --query "[?contains(name, '$featureName')]" -o json
Write-Output "-- $featureName"
$feature = $aksfeature | Convertfrom-Json
$feature.properties.state
if ($feature.properties.state -ne 'Registered') {
            Write-Output $feature
            Write-Error "$featureName NOT registered"
}