code: public String get(String attributeName, Object... params) {
          if (attributeName == null) throw new NullPointerException("attributeName cannot be null");
  
          return validators.get(attributeName).formatMessage(locale, params);
      }
docs: Provides a message from the resource bundle <code>activejdbc_messages</code> which is merged
  with parameters. This methods expects the message in the resource bundle to be parametrized.
  This message is configured for a validator using a Fluent Interface when declaring a validator:
  <pre>
  public class Temperature extends Model {
  static{
  validateRange("temp", 0, 100).message("temperature cannot be less than {0} or more than {1}");
  }
  }
  </pre>
  
  @param attributeName name of attribute in error.
  @param params        list of parameters for a message. The order of parameters in this list will correspond to the
  numeric order in the parameters listed in the message and has nothing to do with a physical order. This means
  that the 0th parameter in the list will correspond to <code>{0}</code>, 1st to <code>{1}</code> and so on.
  @return a message from the resource bundle <code>activejdbc_messages</code> with default locale, which is merged
  with parameters.