I've found a strange discrepancy between tests our surefire maven plugin
discovers compared to what eclipse discovers. Eclipse discovers more
tests, which is a rather *SEVERE* issue regarding our current surefire
I've opened an issue  to investigate this.
I already fixed all failing tests (as picked up by eclipse, but not with
surefire) within the 'core/metamodel' .
That lead to the discovery of 2 bugs  in 'master' and a
discrepancy between doc and code .