Get timestamps in Query result with unix format

Using the HTTP API to POST a Flux query, is it possible to retrieve the values of a Bucket formatted as Unix timestamps instead of RFC 3339 format?

I believe in v1 it was possible to do so using the epoch=h|s|ms… parameter, is there a way of doing that in v2?

Using a data processor that only accepts Unix format it is quite resource heavy on the client side to parse and convert all timestamps, as the data involved is big.