code: public void marshall(HTTPRequest hTTPRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (hTTPRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(hTTPRequest.getClientIP(), CLIENTIP_BINDING);
              protocolMarshaller.marshall(hTTPRequest.getCountry(), COUNTRY_BINDING);
              protocolMarshaller.marshall(hTTPRequest.getURI(), URI_BINDING);
              protocolMarshaller.marshall(hTTPRequest.getMethod(), METHOD_BINDING);
              protocolMarshaller.marshall(hTTPRequest.getHTTPVersion(), HTTPVERSION_BINDING);
              protocolMarshaller.marshall(hTTPRequest.getHeaders(), HEADERS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.