code: public static ClassPath from(ClassLoader classloader) throws IOException {
      return from(classloader, Predicates.<URI>alwaysTrue());
    }
docs: Returns a {@code ClassPath} representing all classes and resources loadable from {@code
  classloader} and its parent class loaders.
  
  <p>Currently only {@link java.net.URLClassLoader} and only {@code file://} urls are supported.
  
  @throws java.io.IOException if the attempt to read class path resources (jar files or directories)
  failed.