docs: public void marshall(Integration integration, ProtocolMarshaller protocolMarshaller) {
  
          if (integration == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(integration.getConnectionId(), CONNECTIONID_BINDING);
              protocolMarshaller.marshall(integration.getConnectionType(), CONNECTIONTYPE_BINDING);
              protocolMarshaller.marshall(integration.getContentHandlingStrategy(), CONTENTHANDLINGSTRATEGY_BINDING);
              protocolMarshaller.marshall(integration.getCredentialsArn(), CREDENTIALSARN_BINDING);
              protocolMarshaller.marshall(integration.getDescription(), DESCRIPTION_BINDING);
              protocolMarshaller.marshall(integration.getIntegrationId(), INTEGRATIONID_BINDING);
              protocolMarshaller.marshall(integration.getIntegrationMethod(), INTEGRATIONMETHOD_BINDING);
              protocolMarshaller.marshall(integration.getIntegrationResponseSelectionExpression(), INTEGRATIONRESPONSESELECTIONEXPRESSION_BINDING);
              protocolMarshaller.marshall(integration.getIntegrationType(), INTEGRATIONTYPE_BINDING);
              protocolMarshaller.marshall(integration.getIntegrationUri(), INTEGRATIONURI_BINDING);
              protocolMarshaller.marshall(integration.getPassthroughBehavior(), PASSTHROUGHBEHAVIOR_BINDING);
              protocolMarshaller.marshall(integration.getRequestParameters(), REQUESTPARAMETERS_BINDING);
              protocolMarshaller.marshall(integration.getRequestTemplates(), REQUESTTEMPLATES_BINDING);
              protocolMarshaller.marshall(integration.getTemplateSelectionExpression(), TEMPLATESELECTIONEXPRESSION_BINDING);
              protocolMarshaller.marshall(integration.getTimeoutInMillis(), TIMEOUTINMILLIS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }