copyWith method
Implementation
@override
CallServerTypeWebrtc copyWith({
  String? username,
  String? password,
  bool? supportsTurn,
  bool? supportsStun,
}) => CallServerTypeWebrtc(
  username: username ?? this.username,
  password: password ?? this.password,
  supportsTurn: supportsTurn ?? this.supportsTurn,
  supportsStun: supportsStun ?? this.supportsStun,
);