if (!configurationStore.get(locale).containsKey(group)) {
StringBuilder msg = new StringBuilder("The group '");
msg.append(group);
msg.append("' doesn't exist in your configuration files. Either create it or choose an existing one among ");
msg.append(configurationStore.get(locale).keySet());
throw new UnkownGroupException(msg.toString());
}
MessageResolver messageResolver = DatatablesConfigurator.getMessageResolver(request);
return new TableConfiguration(configurationStore.get(locale).get(group), messageResolver, request);