toJson method
Implementation
@override
Map<String?, dynamic> toJson() => {
"token_type": tokenType,
"expires_in": expiresIn,
"refresh_token": refreshToken,
"access_token": accessToken,
"id_token": idToken,
error?.isEmpty ?? true ? null : "error": error,
errorDescription?.isEmpty ?? true ? null : "error_description":
errorDescription,
};