code: public void marshall(UpdateApiRequest updateApiRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (updateApiRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(updateApiRequest.getApiId(), APIID_BINDING);
              protocolMarshaller.marshall(updateApiRequest.getApiKeySelectionExpression(), APIKEYSELECTIONEXPRESSION_BINDING);
              protocolMarshaller.marshall(updateApiRequest.getDescription(), DESCRIPTION_BINDING);
              protocolMarshaller.marshall(updateApiRequest.getDisableSchemaValidation(), DISABLESCHEMAVALIDATION_BINDING);
              protocolMarshaller.marshall(updateApiRequest.getName(), NAME_BINDING);
              protocolMarshaller.marshall(updateApiRequest.getRouteSelectionExpression(), ROUTESELECTIONEXPRESSION_BINDING);
              protocolMarshaller.marshall(updateApiRequest.getVersion(), VERSION_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.