selectWithoutCacheFn = function() {
    var backStore = /** @type {!lf.BackStore} */ (
        hr.db.getGlobal().getService(lf.service.BACK_STORE));
    var tx = backStore.createTx(lf.TransactionType.READ_ONLY, [tableSchema]);
    var store = /** @type {!lf.backstore.ObjectStore} */ (
        tx.getTable(
            tableSchema.getName(),
            tableSchema.deserializeRow,
            lf.backstore.TableType.DATA));
    return store.get([]);
  }
Selects the sample record from the database, skipping the cache, to ensure
that deserialization is working when reading a record from the backstore.
@return {!IThenable}