Is there a function for setSendEachAt

[grafxflow]

I am trying to send the same email at 2 different times 7:30 and 12:30 and wondered if the 2 times can be sent in the one api call. I seem to be unable to find the function for 'send_each_at'.

$email->setSendEachAt();

Only

$email->setSendAt();

Does it exist or am I calling the wrong function name? Or do I need to send it as a addCustomArg