PriceType on option historical Candles, ask,bid,last,mark

[kvalbjorn]

I can see on the docs for dxfeed: https://kb.dxfeed.com/en/data-services/aggregated-services/how-to-request-candles.html
That its possible to set different priceTypes. e.g.
last - last trade price
bid - quote bid price
ask - quote ask price
mark - market price defined as average between quote bid and ask prices
I can see that default is last if nothing is set.
I try to figure out your code but I was not able to find where to change it to mark, bid or ask.
Maybe this is not possible when using through TastTrade. But if, Is it possible to set it different?
And thanks for a great lib:-)