IDisplayClusterBlueprintAPI::IsCluster() removed in 4.26, what to use instead?

I couldn’t find any mention of it in the patch notes, but IDisplayClusterBlueprintAPI::IsCluster() (and its counterpart IsStandalone()) has been removed in 4.26. Git blame didn’t give anymore info as to why. And I’m left wondering: why did those methods get removed, and what should I use instead? My current best workaround is to check GetNodesAmount() (== 0 : standalone, > 0 : cluster), but that’s not pretty in any way.