Used to match content in ServerSentEvent.result (Both event type and event content matched will be delivered, Not specifying means ignoring content matching)
SSE deliver priority, Multiple interceptors watch a same event, priority distribution to high priority interceptor processing.
For example : A and B interceptor receive C event simultaneously, A interceptor watch C event priority is Priority.high, but B interceptor watch C event priority is Priority.middle
This will be prioritized send event to interceptor A, if A interceptor removed C event from cache pool, C event will not be received in B interceptor.
Default value Priority.low