sdk-for-flutter/docs/examples/account/get-session.md

import 'package:appwrite/appwrite.dart';

Client client = Client()
    .setEndpoint('https://<REGION>.cloud.appwrite.io/v1') // Your API Endpoint
    .setProject('<YOUR_PROJECT_ID>'); // Your project ID

Account account = Account(client);

Session result = await account.getSession(
    sessionId: '<SESSION_ID>',
);