@Override
                                public Collection<URL> run() throws IOException {
                                    final ArrayList<URL> urls = new ArrayList<>();
                                    for (final Resource resource : resources) {
                                        urls.add(resource.buildJarEmbeddedUrl());
                                    }
                                    return urls;
                                }
Finds resources recognized as the given name.

<p>Note that {@link java.net.URLClassLoader#findResources} is public while {@link java.lang.ClassLoader#findResources}
is protected.
embulk-core/src/main/java/org/embulk/cli/SelfContainedJarAwareURLClassLoader.java