@Before
  public void before() {
    nettyByteBufLeakHelper.beforeTest();
  }
@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