from static method
Implementation
static from(String token) {
List<String> parts = token.split(".");
final header = _decodeGroup(parts[0]);
final payload = _decodeGroup(parts[1]);
final secret = parts[2];
final jwt = Jwt(
header: JwtHeader.fromJson(header),
payload: JwtPayload.fromJson(payload),
secret: secret);
jwt.token = token;
return jwt;
}