Using Wildcards in the Prefix of Thymeleaf's Template Resolver - spring

Question

I am trying to set up Thymeleaf so that it will search all the subpackages in my classpath for template files (e.g. my.root.package.subpackage1, my.root.package.subpackage2, my.root.package.subpackage3).
My configuration looks like this:
#Bean
public ThymeleafViewResolver viewResolver() {
final ThymeleafViewResolver resolver = new ThymeleafViewResolver();
resolver.setTemplateEngine(templateEngine());
resolver.setCharacterEncoding("UTF-8");
return resolver;
}
#Bean
public SpringTemplateEngine templateEngine() {
final SpringTemplateEngine engine = new SpringTemplateEngine();
engine.setTemplateResolver(templateResolver());
return engine;
}
#Bean
public SpringResourceTemplateResolver templateResolver() {
final SpringResourceTemplateResolver resolver = new SpringResourceTemplateResolver();
resolver.setApplicationContext(context);
resolver.setPrefix("classpath:my/root/package/**/");
resolver.setSuffix(".html");
resolver.setTemplateMode(TemplateMode.HTML);
return resolver;
}
But this is throwing an exception:
Java.io.FileNotFoundException: class path resource [my/root/package/**/Example.html] cannot be opened because it does not exist
org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:172)
org.thymeleaf.spring4.templateresource.SpringResourceTemplateResource.reader(SpringResourceTemplateResource.java:103)
org.thymeleaf.templateparser.markup.AbstractMarkupTemplateParser.parse(AbstractMarkupTemplateParser.java:226)
org.thymeleaf.templateparser.markup.AbstractMarkupTemplateParser.parseStandalone(AbstractMarkupTemplateParser.java:100)
org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:662)
org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1089)
org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1063)
org.thymeleaf.spring4.view.ThymeleafView.renderFragment(ThymeleafView.java:335)
org.thymeleaf.spring4.view.ThymeleafView.render(ThymeleafView.java:189)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1243)
org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1027)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:971)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:968)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:859)
javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.springframework.web.servlet.resource.ResourceUrlEncodingFilter.doFilterInternal(ResourceUrlEncodingFilter.java:52)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
It doesn't seem to like the wildcard. It works just fine if I hard-code the subpackage.
Any ideas why this doesn't work?