code: public void marshall(PutIntegrationRequest putIntegrationRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (putIntegrationRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(putIntegrationRequest.getRestApiId(), RESTAPIID_BINDING);
              protocolMarshaller.marshall(putIntegrationRequest.getResourceId(), RESOURCEID_BINDING);
              protocolMarshaller.marshall(putIntegrationRequest.getHttpMethod(), HTTPMETHOD_BINDING);
              protocolMarshaller.marshall(putIntegrationRequest.getType(), TYPE_BINDING);
              protocolMarshaller.marshall(putIntegrationRequest.getIntegrationHttpMethod(), INTEGRATIONHTTPMETHOD_BINDING);
              protocolMarshaller.marshall(putIntegrationRequest.getUri(), URI_BINDING);
              protocolMarshaller.marshall(putIntegrationRequest.getConnectionType(), CONNECTIONTYPE_BINDING);
              protocolMarshaller.marshall(putIntegrationRequest.getConnectionId(), CONNECTIONID_BINDING);
              protocolMarshaller.marshall(putIntegrationRequest.getCredentials(), CREDENTIALS_BINDING);
              protocolMarshaller.marshall(putIntegrationRequest.getRequestParameters(), REQUESTPARAMETERS_BINDING);
              protocolMarshaller.marshall(putIntegrationRequest.getRequestTemplates(), REQUESTTEMPLATES_BINDING);
              protocolMarshaller.marshall(putIntegrationRequest.getPassthroughBehavior(), PASSTHROUGHBEHAVIOR_BINDING);
              protocolMarshaller.marshall(putIntegrationRequest.getCacheNamespace(), CACHENAMESPACE_BINDING);
              protocolMarshaller.marshall(putIntegrationRequest.getCacheKeyParameters(), CACHEKEYPARAMETERS_BINDING);
              protocolMarshaller.marshall(putIntegrationRequest.getContentHandling(), CONTENTHANDLING_BINDING);
              protocolMarshaller.marshall(putIntegrationRequest.getTimeoutInMillis(), TIMEOUTINMILLIS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.