return classInfo(cls, cls.getClassLoader());
  }

  private static ClassInfo classInfo(Class<?> cls, ClassLoader classLoader) {
    String resource = cls.getName().replace('.', '/') + ".class";
    return new ClassInfo(FILE, resource, classLoader);
  }

  private static Manifest manifestClasspath(String classpath) throws IOException {
    return manifest("Class-Path: " + classpath + "\n");
  }