SubscriptionValidationResponse type

true/accept: Allow the incoming context through, and any subsequent/queued data that belongs to it - false/deny: Deny the incoming context, if no context has been accepted, then queue data until one is - accept_and_terminate: Allow the incoming context, then deny further data, flush and shut down the node this is useful for cleanly terminating outputs when the context is empty - deny_and_queue: Deny the incoming context, and revert to the original queueing behaviour as if no context has been accepted this is useful when switching from one full context to another, avoiding any "in-between" - deny_and_drop: Deny the incoming context, drop any currently queued data, and drop any further data that might be received this is useful if you have a lot of setup on start-up and would prefer not to queue data while waiting for that to take place