code: private boolean isReadOnlyKey(Collection.Key key) {
  
  	return (key.equals(KeyConstants._java) || key.equals(KeyConstants._separator) || key.equals(KeyConstants._os) || key.equals(KeyConstants._coldfusion)
  		|| key.equals(KeyConstants._lucee));
      }
docs: returns if the key is a readonly key
  
  @param key key to check
  @return is readonly