isStackexchangeUrl method
Check string is stack exchange url
Implementation
bool isStackexchangeUrl({String? user, String? id, String? community}) {
var o = stackexchangeUrl;
if (o == null) return false;
return (user == null || o.userName == user) &&
(id == null || o.id == id) &&
(community == null || o.community == community);
}