Often a user creates an MDS database without granting Administrator or Super User access to other users, then leaves the company. As a result nobody can maintain the MDS databases (and as their AD account gets disabled we can't use it either).
In MDS 2008 R2 -> MDS 2014 Microsoft has a procedure to circumvent this issue as documented here https://msdn.microsoft.com/en-us/library/ff487048%28v=sql.120%29.aspx?f=255&MSPPError=-2147217396
However in MDS 2016 the procedure mdm.udpSecuritySetAdministrator is no longer available. What's the Microsoft supported method of reassigning Super User now when the original super users are no longer available?