public static void checkQueueSize(String senderId, int numQueueEntries) {
    await()
        .untilAsserted(() -> testQueueSize(senderId, numQueueEntries));
  }
Returns a Map that contains the count for number of cache server and number of Receivers.
geode-wan/src/distributedTest/java/org/apache/geode/internal/cache/wan/WANTestBase.java