code: public synchronized static final AccessClassLoader get(ClassLoader parent) {
  		AccessClassLoader loader = (AccessClassLoader) ASM_CLASS_LOADERS.get(parent);
  		if (loader == null) {
  			loader = new AccessClassLoader(parent);
  			ASM_CLASS_LOADERS.put(parent, loader);
  		}
  		return loader;
  	}
docs: Creates an AccessClassLoader for the given parent
  @param parent The parent ClassLoader for this instance
  @return A new instance, or an existing instance if one already exists.