@Before
  public void before() {
    Map<String, Meter> meters = routerMetricRegistry.getMeters();
    transmissionSendBytesCountBeforeTest = meters.get(transmissionSendBytesMetricName).getCount();
    transmissionReceiveBytesCountBeforeTest = meters.get(transmissionReceiveBytesMetricName).getCount();
  }
Instantiates {@link RouterServerSSLTest}
@param testEncryption {@code true} if blobs need to be tested w/ encryption. {@code false} otherwise
ambry-server/src/integration-test/java/com/github/ambry/server/RouterServerSSLTest.java