Interface Nexus\Mcp\Server\Subscription\SubscriptionStoreInterface

Opens a stream, acknowledging it before it becomes visible to any emit.

Narrows $requested to the notification types this store delivers. The spec omits the types it does not honour rather than reporting them false.

Tears $entry down: tells the client which subscriptions/listen is ending, then releases the handler holding it open. Does nothing for a stream that is already gone.

Deregisters $entry without announcing anything, for a stream the client already abandoned.

Closes every open stream, releasing each handler so the server can drain. Streams opened afterwards are settled at once rather than held.

Announces that the contents behind $uri changed, to the streams subscribed to that URI.