使用嵌套对象检测丢失的JSON键

Currently I am in the process of working with an API that is still in development. Due to this, the keys in the response are still changing. I have successfully been able to retrieve and parse the JSON data from the API into an NSDictionary, and then use this NSDictionary to map the values into custom objects. The approach I am using is the following Currently I am in the process of working with a