code: public void addAll(String[] strings) {
  		if (strings == null) {
  			return;
  		}
  		for (String string : strings) {
  			add(string);
  		}
  	}
docs: Add strings accepted by this filter predicate. Strings argument can come from {@link File#list()} and can be null in
  which case this method does nothing.
  
  @param strings strings to scan for pattern, possible null.