delegateInput method
When asynchronous reading is not supported, an input for real reading will be cached in memory(web) or file(dart.io).
Implementation
@override
Future<HaveResourceImageInput> delegateInput() async {
final input = await createDelegateInput(uri);
final delegate = HaveResourceImageInput(
innerInput: input.input,
onRelease: () async {
await input.onRelease();
},
);
return delegate;
}