@Parameterized.Parameters
  public static List<Object[]> data() {
    return Arrays.asList(
        new Object[][]{{true, QuotaMode.TRACKING}, {false, QuotaMode.TRACKING}, {true, QuotaMode.THROTTLING},
            {false, QuotaMode.THROTTLING}});
  }
@return a list of arrays that represent the constructor argument to make quota manager accept or reject requests.
ambry-frontend/src/integration-test/java/com/github/ambry/frontend/FrontendQuotaIntegrationTest.java