This class is a generic marker returned from a request into an executing flow has completed processing, indicating a client response needs to be issued. An instance of a ViewSelection subclass represents the selection of a concrete response type. It is expected that callers introspect the returned view selection instance to handle the response types they support.

View selections are returned as a result of entering a ViewState or EndState , typically created by those states delegating to a ViewSelector factory (a creational strategy). When a state of either of those types is entered and returns, the caller into the web flow system is handed a fully-configured ViewSelection instance and is expected to present some form inteface to the client that allows for interaction at that point within the flow.