code: public FormComponent<L> newLeftFormComponent(final String id, final IModel<L> model)
  	{
  		return ComponentFactory.newTextField(id, model);
  	}
docs: Factory method for create the new left {@link FormComponent}. 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 left {@link FormComponent}.
  
  @param id
  the id
  @param model
  the model
  @return the new left {@link FormComponent}