<?php
use Microsoft\Graph\Beta\GraphServiceClient;
use Microsoft\Graph\Beta\Generated\IdentityGovernance\AccessReviews\Definitions\DefinitionsRequestBuilderGetRequestConfiguration;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestConfiguration = new DefinitionsRequestBuilderGetRequestConfiguration();
$queryParameters = DefinitionsRequestBuilderGetRequestConfiguration::createQueryParameters();
$queryParameters->filter = "contains(scope/microsoft.graph.accessReviewQueryScope/query, './members')";
$requestConfiguration->queryParameters = $queryParameters;
$result = $graphServiceClient->identityGovernance()->accessReviews()->definitions()->get($requestConfiguration)->wait();