public void parse(String line, ParseState state)
            {
                lineParser.parse(line, state);

                ParseUtil.match(Constants.EXT_X_I_FRAMES_ONLY_PATTERN, line, getTag());

                if (state.getCompatibilityVersion() < 4)
                {
                    throw ParseException.create(ParseExceptionType.REQUIRES_PROTOCOL_VERSION_4_OR_HIGHER, getTag());
                }

                state.setIsIframesOnly();
            }