Use of Custom Properties from calendar events in Outlook 365

问题

I created an Outlook Add-In using JavaScript Office to store custom properties into a calendar event. I used the following call to retrieve data: event.loadCustomPropertiesAsync(callback) Everything works fine in the Add-In.

I want to build a Universal App and be able to retrieve the same data. But I can't find anything to do it with the current API or Graph. Is it being developed ? Can someone point me in the right direction to solve my problem? How can we get the Graph Beta version?

Thanks

来源：https://stackoverflow.com/questions/38466982/use-of-custom-properties-from-calendar-events-in-outlook-365