public static QuotaName getCUQuotaName(RestRequest restRequest) {
    return isReadRequest(restRequest) ? QuotaName.READ_CAPACITY_UNIT : QuotaName.WRITE_CAPACITY_UNIT;
  }
@param quotaChargeCallback {@link QuotaChargeCallback} object.
@return {@code true} if the charge needs to happen AFTER a request is processed. {@code false} otherwise.
ambry-quota/src/main/java/com/github/ambry/quota/QuotaUtils.java