fetch method
Fetch this asset and return its binary data.
Implementation
Future<Uint8List> fetch({CdnFormat? format, int? size}) async {
assert(format != CdnFormat.gif || isAnimated, 'Asset must be animated to fetch as GIF');
final request = _getRequest(format ?? defaultFormat, size);
final response = await client.httpHandler.executeSafe(request);
return response.body;
}