ExampleConfigEntityDeleteForm.php

<?php

namespace Drupal\ctools_wizard_test\Form;

use Drupal\Core\Entity\EntityConfirmFormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Url;

/**
 * Builds the form to delete Example config entity entities.
 */
class ExampleConfigEntityDeleteForm extends EntityConfirmFormBase {
    
    /**
     * {@inheritdoc}
     */
    public function getQuestion() {
        return $this->t('Are you sure you want to delete %name?', [
            '%name' => $this->entity
                ->label(),
        ]);
    }
    
    /**
     * {@inheritdoc}
     */
    public function getCancelUrl() {
        return new Url('entity.ctools_wizard_test_config_entity.collection');
    }
    
    /**
     * {@inheritdoc}
     */
    public function getConfirmText() {
        return $this->t('Delete');
    }
    
    /**
     * {@inheritdoc}
     */
    public function submitForm(array &$form, FormStateInterface $form_state) {
        $this->entity
            ->delete();
        $this->messenger()
            ->addMessage($this->t('content @type: deleted @label.', [
            '@type' => $this->entity
                ->bundle(),
            '@label' => $this->entity
                ->label(),
        ]));
        $form_state->setRedirectUrl($this->getCancelUrl());
    }

}