windows server 2016 - ADFS 4 can multiple claims provider trusts use same signing certificate -

we federate our adfs server 2 partner idps. appears used same signing certificate both test environment federation servers. adfs 3 therefore won't let me import 2nd claims provider.

this comment seems indicate adfs 4 (windows server 2016) supports multiple idps using same signing certificate, cannot find supporting documentation confirms this.

can confirm whether supported or not?