Appending to Dynamic Containers
The Notification service allows you to define a container to which the Notification will be appended.
To provide a
ViewContainerRef element, use the
appendTo property. Тhe Notification service should be added to the
providers array of the component, if the specified
appendTo element is part of the view, which the component renders through the route navigation, or if at some point it is destroyed by the application logic.