toJsonString method

Implementation

String toJsonString() {
  Map<String, dynamic> map = {};
  map['language'] = language;

  if (user != null) {
    map['user'] = user!;
  }
  if (pwd != null) {
    map['pwd'] = pwd!;
  }
  if (tk != null) {
    map['tk'] = tk!;
  }
  if (userid != null) {
    map['userid'] = userid!;
  }
  return json.encode(map);
}