Implement simple and native schema API
deliver in original metamodel / with original IDs
(from redmine: issue id 501, created on 2018-01-22tgradl, closed on 2018-01-22)
deliver in original metamodel / with original IDs
(from redmine: issue id 501, created on 2018-01-22tgradl, closed on 2018-01-22)