@Override
		public boolean exists() {
			return getResourceUrl(originalResource) != null;
		}
A <code>ResourceResolver</code> that, when given a resource string which
looks like a classpath URL, will look up the referenced resource and, if it's
a file on the local file system return a direct reference to that file or if
it's a JAR resource it will create a copy of it in the cache and return a
reference to that.
src/main/java/dev/jbang/source/resolvers/ClasspathResourceResolver.java