Java CompletableFuture in template

[NilsWeinander-KulturIT]

Is it possible to handle a Java CompletableFuture asynchronously in a Play template? Something like

@defining(context.dataUtils.classFacetSearch(context)) { classFacetSearch =>
	@classFacetSearch.thenAccept(searchResult => {
		...
	}
}

(this syntax does not work), or do I have to join the future:

@defining(context.dataUtils.classFacetSearch(context).join) { classFacetSearch =>
	...
}