HelpPageTestController.php

<?php

namespace Drupal\help_page_test;


/**
 * Provides controllers for testing the help block.
 */
class HelpPageTestController {
  
  /**
   * Provides a route with help.
   *
   * @return array
   *   A render array.
   */
  public function hasHelp() {
    return [
      '#markup' => 'A route with help.',
    ];
  }
  
  /**
   * Provides a route with no help.
   *
   * @return array
   *   A render array.
   */
  public function noHelp() {
    return [
      '#markup' => 'A route without help.',
    ];
  }
  
  /**
   * Provides a route which has multiple array returns from hook_help().
   *
   * @return array
   *   A render array.
   */
  public function testArray() {
    return [
      '#markup' => 'A route which has multiple array returns from hook_help().',
    ];
  }

}