public static byte[] serializeAccountsInJsonNoContainers(Account account) throws IOException {
    return objectMapperWithoutContainer.writeValueAsBytes(account);
  }
Serialize an account to bytes in json, stripping out its containers.
@param account the {@link Account}s to serialize.
@return the serialized bytes in json format.
ambry-api/src/main/java/com/github/ambry/account/AccountCollectionSerde.java