<?php
use Microsoft\Graph\GraphServiceClient;
use Microsoft\Graph\Generated\Models\CertificateAuthorityDetail;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestBody = new CertificateAuthorityDetail();
$requestBody->setIsIssuerHintEnabled(true);
$result = $graphServiceClient->directory()->publicKeyInfrastructure()->certificateBasedAuthConfigurations()->byCertificateBasedAuthPkiId('certificateBasedAuthPki-id')->certificateAuthorities()->byCertificateAuthorityDetailId('certificateAuthorityDetail-id')->patch($requestBody)->wait();