onMatch method
Implementation
bool onMatch(PatternParser parser, Match startMatch) {
final tag = tags.first;
final content = startMatch.match;
final data = <String, String>{tag: content, 'value': content};
parser.addToken(StartTagToken(tag, data: data));
parser.addToken(CharactersToken(content));
parser.addToken(EndTagToken(tag));
return true;
}