code: protected Check<T> newCheck(String wicketId, IModel<T> model, CheckGroup<T> group)
  	{
  		Check<T> check = new Check<T>(wicketId, model, group);
  		return check;
  	}
docs: Method creating a new {@link Check}
  
  @param wicketId
  Wicket identifier
  @param model
  Model to use
  @param group
  Group of the {@link Check}
  @return a {@link Check}