update walkthrough, use function in core instead of internal.execution (#7)
update walkthrough, use function in core instead of internal.execution (#7)

tobiasbayer/lambdacd,tobiasbayer/lambdacd,cz8s/lambdacd,matthiasn/lambdacd,flosell/lambdacd,cz8s/lambdacd,matthiasn/lambdacd,tobiasbayer/lambdacd,flosell/lambdacd,flosell/lambdacd,matthiasn/lambdacd,cz8s/lambdacd