Magento Redirect using { $this->_redirect } on Controller

Example.php

<?php 

namespace Icube\Training\Controller\Index;

use \Magento\Framework\App\Action\Action;
use \Magento\Framework\App\Action\Context;

class Example extends Action
{
  protected $traineeFactory;
  public function __construct(
      Context $context,
      \Icube\Training\Model\TraineeFactory $traineeFactory,
  ){
      $this->traineeFactory = $traineeFactory;
      parent::__construct($context);
  }

  public function execute()
  {
      // redirect to path -> {baseUrl}/Training/ 
      // $this->_redirect is default function that inherit from parent class Action
      $this->_redirect('training/');
  }
}