code: function (config) {
  			
  			var position, choice;
  			
  			position = this.getChoicePosition(config);
  			
  			if (position !== -1) {
  				
  				choice = this.choicesList[position];
  				
  				if (!choice.visible) {
  					
  					choice.visible = true;
  					this.appendChoiceNode(choice.node, position);
  				
  				}
  				
  			}
  			
  		}
docs: Show a choice
  @param {Object} config An object targeting the choice to show (e.g. { position : 1 } || { value: 'second' } || { label: 'Second' })