code: @Override
    public <T> T findAndModify(String jxQuery, Update update, Class<T> entityClass) {
      return findAndModify(jxQuery, update, Util.determineCollectionName(entityClass));
    }
docs: /* (non-Javadoc)
  @see org.jsondb.JsonDBOperations#findAndModify(java.lang.String, org.jsondb.query.Update, java.lang.Class)