private Callback<Void> securityProcessResponseCallback() {
      return buildCallback(metrics.deleteBlobSecurityProcessResponseMetrics, securityCheckResult -> {
        LOGGER.debug("Final call back been called successfully");
        finalCallback.onCompletion(null, null);
      }, restRequest.getUri(), LOGGER, finalCallback);
    }
After {@link SecurityService#processResponse}, call {@code finalCallback}.
@return a {@link Callback} to be used with {@link SecurityService#processResponse}.
ambry-frontend/src/main/java/com/github/ambry/frontend/DeleteBlobHandler.java