ExpressionFormTrait.php

<?php

namespace Drupal\rules\Form\Expression;

use Drupal\Core\Form\FormStateInterface;

/**
 * Provides base methods for expression forms.
 */
trait ExpressionFormTrait {
    
    /**
     * Implements ExpressionFormInterface::validateForm().
     *
     * Empty default implementation.
     */
    public function validateForm(array $form, FormStateInterface $form_state) {
    }
    
    /**
     * Implements ExpressionFormInterface::submitForm().
     *
     * Empty default implementation.
     */
    public function submitForm(array &$form, FormStateInterface $form_state) {
    }

}