public static void startReceivers() {
    Set<GatewayReceiver> receivers = cache.getGatewayReceivers();
    for (GatewayReceiver receiver : receivers) {
      try {
        receiver.start();
      } catch (IOException e) {
        throw new RuntimeException(e);
      }
    }
  }
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