code: public void marshall(ViewBillingRequest viewBillingRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (viewBillingRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(viewBillingRequest.getStart(), START_BINDING);
              protocolMarshaller.marshall(viewBillingRequest.getEnd(), END_BINDING);
              protocolMarshaller.marshall(viewBillingRequest.getMarker(), MARKER_BINDING);
              protocolMarshaller.marshall(viewBillingRequest.getMaxItems(), MAXITEMS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.