I need to create contacts programmatically so that it would appear in the Global Address List of Exchange Online user. It is my understanding that those contacts are Azure AD contacts, but Graph REST API only supports getting contacts: https://msdn.microsoft.com/en-us/library/azure/dn151612.aspx.

I already asked on Azure AD forum and was told there's no functionality to add/update contacts.

Is there any other way to create a contact so that it would appear in the Global Address List?