ViewsTestFormMultipleController.php

<?php

namespace Drupal\views_test_data\Controller;

use Drupal\Core\Controller\ControllerBase;

/**
 * Controller routines for views form multiple test routes.
 */
class ViewsTestFormMultipleController extends ControllerBase {
    
    /**
     * Returns a test page having test_form_multiple view embedded twice.
     */
    public function testPage() {
        $build = [
            'view_arg1' => [
                '#prefix' => '<div class="view-test-form-multiple-1">',
                '#suffix' => '</div>',
                '#type' => 'view',
                '#name' => 'test_form_multiple',
                '#display_id' => 'default',
                '#arguments' => [
                    'arg1',
                ],
                '#embed' => TRUE,
            ],
            'view_arg2' => [
                '#prefix' => '<div class="view-test-form-multiple-2">',
                '#suffix' => '</div>',
                '#type' => 'view',
                '#name' => 'test_form_multiple',
                '#display_id' => 'default',
                '#arguments' => [
                    'arg2',
                ],
                '#embed' => TRUE,
            ],
        ];
        return $build;
    }

}