EDIT

ref #9804 improve handling for empty categorical data (empty or null value state data)

fix #9831, ref #9477 fix failing term loading for unordered missing terms

adapt getIdentifier methods

fix #9833 remove cascading in DDS to descriptions

ref #9833 remove cascading in DDS to descriptiveSystem, geoFilter and subtreeFilter

cleanup

ref 6387 add some first rules for rank<->code test (cont.)

ref 6387 add some first rules for rank<->code test

cleanup

minor and cleanup