public static QuotaResource fromContainerId(short accountId, short containerId) {
    return new QuotaResource(String.format("%d_%d", accountId, containerId), QuotaResourceType.CONTAINER);
  }
Create {@link QuotaResource} from account id and container id.
@param accountId The account id.
@param containerId The container id.
@return QuotaResource object.
ambry-api/src/main/java/com/github/ambry/quota/QuotaResource.java