code: static SimpleModule getModule(ObjectMapper mapper) {
          SimpleModule module = new SimpleModule();
          module.addDeserializer(CloudError.class, new CloudErrorDeserializer(mapper));
          return module;
      }
docs: Gets a module wrapping this serializer as an adapter for the Jackson
  ObjectMapper.
  
  @param mapper the object mapper for default deserializations.
  @return a simple module to be plugged onto Jackson ObjectMapper.