Load a list of taxonomy terms in Drupal 8

Code snippet that can be used to load a list of taxonomy terms in Drupal 8.

<?php

namespace Drupal\mymodule\Controller;

use Drupal\Core\Controller\ControllerBase;
use Drupal\taxonomy\Entity\Term;
use Drupal\Core\Link;
use Drupal\Core\Url;

/**
 * Class MyModuleController
 * @package Drupal\mymodule\Controller
 */
class MyModuleController extends ControllerBase
{

  /**
   * @return array
   */
  public function index()
  {
    $vocabulary_name = 'tags';
    $query = \Drupal::entityQuery('taxonomy_term');
    $query->condition('vid', $vocabulary_name);
    $tids = $query->execute();
    $terms = Term::loadMultiple($tids);
    $output = '<ul>';
    foreach ($terms as $term) {
      $name = $term->getName();;
      $url = Url::fromRoute('entity.taxonomy_term.canonical', ['taxonomy_term' => $term->id()]);
      $link = Link::fromTextAndUrl($name, $url);
      $link = $link->toRenderable();
      $output .= '<li>' . render($link) . '</li>';
    }
    $output .= '</ul>';

    return array(
      '#type' => 'markup',
      '#markup' => $output
    );
  }

}