Value getter/setter for ordered JSONType.object.
JSONException for read access if type is not JSONType.object or the object is unordered. Note: This is @system because of the following pattern:
auto a = &(json.orderedObject()); json.uinteger = 0; // overwrite AA pointer (*a)["hello"] = "world"; // segmentation fault
See Implementation
Value getter/setter for ordered JSONType.object.