Placeholder Attributes Not Correctly Set

Description

When making a forward Geocoding request, all the placemarks in the response should have their usual attributes (i.e. the attributes included in a vanilla cURL request to the Geocoding API). However, for some reason there are placemark attributes that are not being set.

Here's an example request:

        let options = ForwardGeocodeOptions(query: "Hong Kong")
        options.allowedScopes = [.place, .locality]
        options.maximumResultCount = 5
        geocodingDataTask = geocoder.geocode(options) { [unowned self] (placemarks, attribution, error) in
            if let error = error {
                NSLog("%@", error)
            } else if let placemarks = placemarks, !placemarks.isEmpty {
                for placemark in placemarks {
                    print(placemark.name)
                    print(placemark.code)
                    print(placemark.country?.code)
                    print(placemark.administrativeRegion?.address)
                }
            } else {
                self.resultsLabel.text = "No results"
            }
        }

Expected

In the Geocoding API playground, the result of a query with the same parameters includes "short_code" which should be the placemark.code value that is printed in the above code block.

Actual

When the above code block is run, all but placemark.name return nil values:

Hong Kong
nil
nil
nil

Start by reproducing the ForwardGeocodeOptions and geocoder.geocode example for “Hong Kong,” then compare the returned placemarks with the Geocoding API playground response. Trace how the forward-geocoding response populates placemark.name, placemark.code, country.code, and administrativeRegion.address; done means those expected attributes are no longer nil.