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().',
        ];
    }

}