Could you possibly say in more detail where in the RN codebase can I find the exact code which generates the "single JSON message that lists mutations to perfor

Could you possibly say in more detail where in the RN codebase can I find the exact code which generates the "single JSON message that lists mutations to perform" that you claim? I'm super interested and desperately trying to pinpoint it, but I'm having really serious trouble with that :( (Cross-posted this question to: https://stackoverflow.com/q/50873408 https://stackoverflow.com/q/50873408) (I've already asked this in a post on the parent thread, but I let myself copy it here in hope there may be higher chance you'll read it that way...)