That's the regular RN documentation - which is of ZERO help here. Please check the topic of this sub-conversation - you missed it.
Hint: The parent mentions the "JSC C API". You point to Java and Objective-C - that alone should give you a hint that something is wrong with your links, that they don't quite fit into the conversation. That's the equivalent of a physics question where you want Watts and get Newtons - a unit mismatch as an indicator that you solved the wrong problem or the problem wrong.
And just to say that too, I'm the co-maintainer of a popular native package for RN, so I'm already quite familiar with the RN native API for both Android and iOS.
