code: public T withParentClasspath(URL classpath, URL... others) {
  		Set<URL> classpathUrls = new HashSet<>();
  		classpathUrls.add(classpath);
  		Collections.addAll(classpathUrls, others);
  		return withParentClasspath(classpathUrls);
  	}
docs: Change {@link #parentClassLoader} value.
  
  @param classpath New classpath entry.
  @param others Other (optional) classpath urls.
  @return this