setBanner method
Set the server's banner.
await server.assets.setBanner(File('banner.png'), reason: 'Testing');
Implementation
Future<void> setBanner(File banner, {String? reason}) async {
final bannerAsset = ImageAsset.makeAsset(banner);
await _datastore.server.update(serverId.value, {'banner': bannerAsset.makeUrl()}, reason);
}