GET https://graph.microsoft.com/beta/identityGovernance/accessReviews/definitions/6af553ce-104d-4842-ab5f-67d7b556e9dd/instances/9ea56d3c-8746-4cdf-9ccc-c7fe1a267c24/stages/839ecbd4-ba5d-4d32-8249-e734aac47adf
GraphServiceClient graphClient = new GraphServiceClient( authProvider );
var accessReviewStage = await graphClient.IdentityGovernance.AccessReviews.Definitions["{accessReviewScheduleDefinition-id}"].Instances["{accessReviewInstance-id}"].Stages["{accessReviewStage-id}"]
.Request()
.GetAsync();
//THE GO SDK IS IN PREVIEW. NON-PRODUCTION USE ONLY
graphClient := msgraphsdk.NewGraphServiceClient(requestAdapter)
accessReviewScheduleDefinitionId := "accessReviewScheduleDefinition-id"
accessReviewInstanceId := "accessReviewInstance-id"
accessReviewStageId := "accessReviewStage-id"
result, err := graphClient.IdentityGovernance().AccessReviews().DefinitionsById(&accessReviewScheduleDefinitionId).InstancesById(&accessReviewInstanceId).StagesById(&accessReviewStageId).Get()