sdk-for-dart/docs/examples/avatars/get-image.md

import 'package:dart_appwrite/dart_appwrite.dart';

Client client = Client()
    .setEndpoint('https://<REGION>.cloud.appwrite.io/v1') // Your API Endpoint
    .setProject('<YOUR_PROJECT_ID>') // Your project ID
    .setSession(''); // The user session to authenticate with

Avatars avatars = Avatars(client);

Uint8List result = await avatars.getImage(
    url: 'https://example.com',
    width: 0, // (optional)
    height: 0, // (optional)
);