public DeviceType unmarshall(JsonUnmarshallerContext context) throws Exception {
   AwsJsonReader reader = context.getReader();
   if (!reader.isContainer()) {
     reader.skipValue();
     return null;
   }
   DeviceType deviceType = new DeviceType();
   reader.beginObject();
   while (reader.hasNext()) {
     String name = reader.nextName();
     if (name.equals("DeviceKey")) {
       deviceType.setDeviceKey(StringJsonUnmarshaller.getInstance().unmarshall(context));
     } else if (name.equals("DeviceAttributes")) {
       deviceType.setDeviceAttributes(
           new ListUnmarshaller<AttributeType>(AttributeTypeJsonUnmarshaller.getInstance())
               .unmarshall(context));
     } else if (name.equals("DeviceCreateDate")) {
       deviceType.setDeviceCreateDate(DateJsonUnmarshaller.getInstance().unmarshall(context));
     } else if (name.equals("DeviceLastModifiedDate")) {
       deviceType.setDeviceLastModifiedDate(
           DateJsonUnmarshaller.getInstance().unmarshall(context));
     } else if (name.equals("DeviceLastAuthenticatedDate")) {
       deviceType.setDeviceLastAuthenticatedDate(
           DateJsonUnmarshaller.getInstance().unmarshall(context));
     } else {
       reader.skipValue();
     }
   }
   reader.endObject();
   return deviceType;
 }