deprecated_instantiate

Instantiating '{0}' is deprecated.

The analyzer produces this diagnostic when a class annotated with @Deprecated.instantiate is instantiated. This annotation indicates that instantiating the class is deprecated and will soon be removed. This change will likely be enforced by marking the class as abstract or sealed.

If the library p defines a class annotated with @Deprecated.instantiate:

@Deprecated.instantiate()
class C {}

Then, in any library other than p, the following code produces this diagnostic:

import 'package:p/p.dart';
​
var c = C();

Follow any directions found in the Deprecation.instantiate annotation.