getReplyExt method
Get extension to reply this message
Implementation
String getReplyExt() {
String replyExt = _ext;
final int startIndex = replyExt.indexOf(':');
if(startIndex == -1) return replyExt;
final int endIndex = replyExt.indexOf('>', startIndex + 1);
return (endIndex == -1) ? replyExt : replyExt.substring(startIndex+1, endIndex);
}