docs: public void marshall(Item item, ProtocolMarshaller protocolMarshaller) {
  
          if (item == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(item.getName(), NAME_BINDING);
              protocolMarshaller.marshall(item.getType(), TYPE_BINDING);
              protocolMarshaller.marshall(item.getETag(), ETAG_BINDING);
              protocolMarshaller.marshall(item.getLastModified(), LASTMODIFIED_BINDING);
              protocolMarshaller.marshall(item.getContentType(), CONTENTTYPE_BINDING);
              protocolMarshaller.marshall(item.getContentLength(), CONTENTLENGTH_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }