GetRegistry returns the registry for this cockroach release.

IsDescriptor returns true for a descriptor-element, i.e.

IsIndex returns if an element is an index type.

FromHasPublicStatusIfFromIsTableAndToIsRowLevelTTL creates a clause which leads to the outer clause failing to unify if the passed element `from` is a Table, `to` is a RowLevelTTl, and there does not exist a Node with the same Target as `fromTarget` in PUBLIC status.