<?php
use Microsoft\Graph\GraphServiceClient;
use Microsoft\Graph\Generated\Solutions\BackupRestore\ProtectionPolicies\Item\ProtectionPolicyBaseItemRequestBuilderGetRequestConfiguration;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestConfiguration = new ProtectionPolicyBaseItemRequestBuilderGetRequestConfiguration();
$headers = [
'Authorization' => 'Bearer <Access-Token>',
];
$requestConfiguration->headers = $headers;
$result = $graphServiceClient->solutions()->backupRestore()->protectionPolicies()->byProtectionPolicyBaseId('protectionPolicyBase-id')->get($requestConfiguration)->wait();