onMatch method
Processes match, adding nodes to parser and possibly advancing
parser.
Returns whether the caller should advance parser by match[0].length.
Implementation
@override
bool onMatch(InlineParser parser, Match match) {
var decodedText = decodeHtmlCharacterFromMatch(match);
if (parser.encodeHtml) {
decodedText = escapeHtml(decodedText);
}
parser.addNode(Text(decodedText));
return true;
}