Add support for sack
Currently GraphAPI has almost no support for doing operations while traversing or listing vertices, like combining vertex properties with weights (edge property) as you traverse. Math is not supported, and often times an alternative would be to use a sack, but that is also not supported. So there is really no workaround.
Thank you for your suggestion. We have reviewed this request and at this time this is not on our road map. Will leave this marked as open so we can revisit this in future planning cycles.