addLazySingleton<T> abstract method
Register a LazySingleton instance.
It will generate a single instance for the duration of
the application, or until manually removed.
The object will be started only when requested the first time.
injector.addLazySingleton(MyController.new);
When [key] is provided this instance only can be found by key
Implementation
void addLazySingleton<T>(
Function constructor, {
BindConfig<T>? config,
String? key,
});