@After
  public void after() {
    if (networkClient != null) {
      networkClient.close();
    }
    Assert.assertEquals("All operations should have completed", 0, router.getOperationsCount());
    if (cryptoJobHandler != null) {
      cryptoJobHandler.close();
    }
    nettyByteBufLeakHelper.afterTest();
    assertCloseCleanup(router);
  }
@param operationTrackerType @param operationTrackerType the type of {@link OperationTracker} to use.
@param testEncryption {@code true} if blob needs to be encrypted. {@code false} otherwise
@throws Exception
ambry-router/src/test/java/com/github/ambry/router/GetBlobInfoOperationTest.java