@Override
  public void updateNewQuotaResources(Collection<Account> accounts) {
    // no-op
  }
Constructor to create a {@link JSONStringStorageQuotaSource}.
@param config The {@link QuotaSource}.
@param accountService The {@link AccountService} to use.e
@throws IOException
ambry-quota/src/main/java/com/github/ambry/quota/storage/JSONStringStorageQuotaSource.java