code: public void marshall(UICustomizationType uICustomizationType, ProtocolMarshaller protocolMarshaller) {
  
          if (uICustomizationType == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(uICustomizationType.getUserPoolId(), USERPOOLID_BINDING);
              protocolMarshaller.marshall(uICustomizationType.getClientId(), CLIENTID_BINDING);
              protocolMarshaller.marshall(uICustomizationType.getImageUrl(), IMAGEURL_BINDING);
              protocolMarshaller.marshall(uICustomizationType.getCSS(), CSS_BINDING);
              protocolMarshaller.marshall(uICustomizationType.getCSSVersion(), CSSVERSION_BINDING);
              protocolMarshaller.marshall(uICustomizationType.getLastModifiedDate(), LASTMODIFIEDDATE_BINDING);
              protocolMarshaller.marshall(uICustomizationType.getCreationDate(), CREATIONDATE_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.