Fix for Transform fluent methods not always returning this.
Fix for Transform fluent methods not always returning this.

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