code: public void marshall(Message message, ProtocolMarshaller protocolMarshaller) {
  
          if (message == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(message.getAction(), ACTION_BINDING);
              protocolMarshaller.marshall(message.getBody(), BODY_BINDING);
              protocolMarshaller.marshall(message.getImageIconUrl(), IMAGEICONURL_BINDING);
              protocolMarshaller.marshall(message.getImageSmallIconUrl(), IMAGESMALLICONURL_BINDING);
              protocolMarshaller.marshall(message.getImageUrl(), IMAGEURL_BINDING);
              protocolMarshaller.marshall(message.getJsonBody(), JSONBODY_BINDING);
              protocolMarshaller.marshall(message.getMediaUrl(), MEDIAURL_BINDING);
              protocolMarshaller.marshall(message.getRawContent(), RAWCONTENT_BINDING);
              protocolMarshaller.marshall(message.getSilentPush(), SILENTPUSH_BINDING);
              protocolMarshaller.marshall(message.getTimeToLive(), TIMETOLIVE_BINDING);
              protocolMarshaller.marshall(message.getTitle(), TITLE_BINDING);
              protocolMarshaller.marshall(message.getUrl(), URL_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.