@Parameterized.Parameters
  public static List<Object[]> data() {
    return Arrays.stream(new Boolean[]{Boolean.TRUE, Boolean.FALSE})
        .map(isThrottling -> new Object[]{isThrottling})
        .collect(Collectors.toList());
  }
Running for both {@link QuotaMode#TRACKING} as well as {@link QuotaMode#THROTTLING}.
@return an array container a flag that is {@code true} for {@link QuotaMode#THROTTLING} and {@code false} for
{@link QuotaMode#TRACKING}.
ambry-quota/src/test/java/com/github/ambry/quota/PreProcessQuotaChargeCallbackTest.java