Equivalent of - https://firebase.google.com/docs/functions/callable
functions:- name: myHttpsCallableFunctiontype: httpsCallable# Since 'httpsCallable' function is meant to be called# from inside your app by your users, it expects a# field 'asUser'# With this field you specify as what user should this# function be triggeredasUser:# A user with this ID must be present in the emulated Firebase Auth usersid: user-id# The 'payload' field is the same as in the 'https' functionpayload: '{}'