Modified GroupBy to use the value of the Expr as the key instead of the Expr itself
Modified GroupBy to use the value of the Expr as the key instead of the Expr itself

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