I'm just trying to create a workbench which is able to write proper CityGML with CityObjectGroups, but unfortunately I can't find anything about that feature type in any documentation or post on this site. There is just one little sentence on the "What's new 2012" page that this feature type was added, so I think it should be possible to write CityObjectGroups and I just don't know how.
My solution so far is, to create an new writer feature type which is called "CityObjectGroup" and every cityobject that should be written also goes to this feature type. I guess all these GroupMember need to receive the citygml_feature_role attribute with the value "groupMember" so I already did that. But what to do next? Nothing really worked so far. Maybe someone of you already has some experiences on this topic? Any help would be appreciated. Thanks!
Jens
