code: protected Label newViewableLabel(final String id, final IModel<T> model)
  	{
  		final PropertyModel<T> viewableLabelModel = new PropertyModel<>(model.getObject(),
  			this.getId());
  		return ComponentFactory.newLabel(id, viewableLabelModel);
  	}
docs: Factory method for creating the new {@link Label}. This method is invoked in the constructor
  from the derived classes and can be overridden so users can provide their own version of a
  new {@link Label}.
  
  @param id
  the id
  @param model
  the model
  @return the new {@link Label}