Are checks etc necessary when using SSE to correctly simulate a client, or is SSE open sufficient?

Hi all,
If I have done an e.g. “exec(sse(“Get SSE”).open(”/stocks/prices"))" will the client consume messages that are sent by the server, or do I need to do something like a “exec(sse(“Set Check”).check(myCheck))” to have the client actually consume the messages (and thus simulate a real user).