@Override
	public ResourceRef resolve(String resource, boolean trusted) {
		return resolvers.stream()
			.map(r -> r.resolve(resource, trusted))
			.filter(Objects::nonNull)
			.findFirst()
			.orElse(null);
	}
A <code>ResourceResolver</code> that, when given a resource string will
delegate the resolving of that string to a list of resolvers one by one until
one of them returns a result and that will then be the result of this
resolver.
src/main/java/dev/jbang/source/resolvers/CombinedResourceResolver.java