Provide "type" ('group' or 'user' or etc.) field for attendees
For now, Graph API is not able to distinguish groups or users in the attendee collection of the Event, and as a result, if we need to process all users on some event we have to store existing groups in cache or make an additional call to graph API.
This category has been deprecated.
Please go to https://microsoftgraph.uservoice.com/ to submit any feature requests related to Microsoft Graph and O365 REST APIs.