ListGrid setGroupSortDirection() / getGroupSortDirection() vs setSortGroupDirection()

Hi Isomorphic,

ListGrid has the following APIs javadoc'd:
setGroupSortDirection() / getGroupSortDirection()

but also without any text:
setSortGroupDirection() / getSortGroupDirection().

The latter seems to be an unwanted artefact.
The methods are present in Eclipse in current 5.0p as well in the 5.1d docs.

Best regards
Blama