/// TEST: Server streaming with multiple responses
/// EXPECT: PASS
/// EXPLAIN: ServerStreaming
--- ENDPOINT ---
echo.EchoService/ServerStream

--- REQUEST ---
{
  "prefix": "Message",
  "count": 3
}

--- RESPONSE ---
{
  "index": 0,
  "message": "Message #0"
}
--- RESPONSE ---
{
  "index": 1,
  "message": "Message #1"
}
--- RESPONSE ---
{
  "index": 2,
  "message": "Message #2"
}

--- ASSERTS ---
@len(.message) > 0
