Set javaFactory for GroupBy.groupKeys, which shouldn't be required.
Set javaFactory for GroupBy.groupKeys, which shouldn't be required.

foam-framework/foam2,foam-framework/foam2,foam-framework/foam2,jacksonic/vjlofvhjfgm,foam-framework/foam2,foam-framework/foam2,jacksonic/vjlofvhjfgm,jacksonic/vjlofvhjfgm