Add method to determine if a component has already been registered.
Object can be either a type Class or an instance key or object.
Used to allow RegistrarAssistant to register default implementation of ErrorsContext and MessagesContext only if these have not already been registered by user.
Description
Add method to determine if a component has already been registered.
Object can be either a type Class or an instance key or object.
Used to allow RegistrarAssistant to register default implementation of ErrorsContext and MessagesContext only if these have not already been registered by user.
Improvement
Closed
Major
Add isRegistered(Object) method to Registrar