Follow-up from #779 with simpler solution (#784)
Follow-up from #779 with simpler solution (#784)

ClassWhitelistContext: Get `whitelist_` working again in JavaScript
foam-framework/foam2,foam-framework/foam2,jacksonic/vjlofvhjfgm,foam-framework/foam2,foam-framework/foam2,jacksonic/vjlofvhjfgm,jacksonic/vjlofvhjfgm,foam-framework/foam2