<?php
use Microsoft\Graph\Beta\GraphServiceClient;
use Microsoft\Graph\Beta\Generated\RoleManagement\Directory\ResourceNamespaces\Item\ResourceActions\ResourceActionsRequestBuilderGetRequestConfiguration;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestConfiguration = new ResourceActionsRequestBuilderGetRequestConfiguration();
$queryParameters = ResourceActionsRequestBuilderGetRequestConfiguration::createQueryParameters();
$queryParameters->filter = "isPrivileged eq true";
$requestConfiguration->queryParameters = $queryParameters;
$result = $graphServiceClient->roleManagement()->directory()->resourceNamespaces()->byUnifiedRbacResourceNamespaceId('unifiedRbacResourceNamespace-id')->resourceActions()->get($requestConfiguration)->wait();