ThymeLeaf is a templating engine.
http://www.thymeleaf.org/documentation.html
Possible integration points:
IResourceResolver - to load resources from deployments. ThymeLeaf's ClassLoaderResourceResolver uses just
ClassLoaderUtils.getClassLoader(ClassLoaderResourceResolver.class).getResourceAsStream(resourceName);
IMessageResolver - use CDI for loading messages.
ICacheManager - use InfiniSpan as cache.