@PublicAPI(usage = ACCESS)
    public JavaClasses importUrls(Collection<URL> urls) {
        return importLocations(Locations.of(urls));
    }
@Test
    public void imports_urls_of_jars() {
        Set<URL> urls = newHashSet(urlOf(Test.class), urlOf(RunWith.class));
        assumeTrue("We can't completely ensure that this will always be taken from a JAR file, though it's very likely",
                "jar".equals(urls.iterator().next().getProtocol()));

        JavaClasses classes = new ClassFileImporter().importUrls(urls)
                .that(DescribedPredicate.not(type(Annotation.class))); // NOTE @Test and @RunWith implement Annotation.class

        assertThat(classes).as("Number of classes at the given URLs").hasSize(2);
    }