private void verifyGetRequestCostHeaders(HttpResponse response, long contentSize) {
    double cuCost = Math.ceil(contentSize / SimpleAmbryCostModelPolicy.CU_COST_UNIT);
    cuCost = Math.max(cuCost, 1);
    verifyCommonRequestCostHeaders(response, cuCost, 0, true);
  }
Verify the request cost headers were attached to the get response properly.
@param response the {@link HttpResponse} to be verified.
@param contentSize size of the blob.
ambry-frontend/src/integration-test/java/com/github/ambry/frontend/FrontendIntegrationTestBase.java