code: public List<String> readStringSubKeys(HKey hk, String key) throws RegistryException {
  		return readStringSubKeys(hk, key, null);
  	}
docs: Read the value name(s) from a given key
  
  @param hk the HKEY
  @param key the key
  @return the value name(s)
  @throws RegistryException when something is not right