<?php
use Microsoft\Graph\Beta\GraphServiceClient;
use Microsoft\Graph\Beta\Generated\DeviceManagement\VirtualEndpoint\OnPremisesConnections\Item\UpdateAdDomainPassword\UpdateAdDomainPasswordPostRequestBody;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestBody = new UpdateAdDomainPasswordPostRequestBody();
$requestBody->setAdDomainPassword('AdDomainPassword value');
$graphServiceClient->deviceManagement()->virtualEndpoint()->onPremisesConnections()->byCloudPcOnPremisesConnectionId('cloudPcOnPremisesConnection-id')->updateAdDomainPassword()->post($requestBody)->wait();