class StripeSourceTypeModel extends StripeJsonModel {

    static void putAdditionalFieldsIntoJsonObject(
            @Nullable JSONObject jsonObject,
            @Nullable Map<String, Object> additionalFields) {
        if (jsonObject == null || additionalFields == null || additionalFields.isEmpty()) {
            return;
        }

        for (String key : additionalFields.keySet()) {
            try {
                if (additionalFields.get(key) != null) {
                    jsonObject.put(key, additionalFields.get(key));
                }
            } catch (JSONException ignored) { }
        }
    }

      StripeSourceTypeModel();

}