class FormAlter

class FormAlter extends Hook {
    
    /**
     * {@inheritdoc}
     */
    public const PREFIX = 'form';
    
    /**
     * {@inheritdoc}
     */
    public const SUFFIX = 'alter';
    
    /**
     * Constructs a FormAlter attribute object.
     *
     * @param string $form_id
     *   (optional) The ID of the form that this implementation alters.
     *   If this is left blank then `form_alter` is the hook that is registered.
     * @param string $method
     *   (optional) The method name. If this attribute is on a method, this
     *   parameter is not required. If this attribute is on a class and this
     *   parameter is omitted, the class must have an __invoke() method, which is
     *   taken as the hook implementation.
     * @param string|null $module
     *   (optional) The module this implementation is for. This allows one module
     *   to implement a hook on behalf of another module. Defaults to the module
     *   the implementation is in.
     * @param \Drupal\Core\Hook\Order\OrderInterface|null $order
     *   (optional) Set the order of the implementation.
     */
    public function __construct(string $form_id = '', string $method = '', ?string $module = NULL, ?OrderInterface $order = NULL) {
        parent::__construct($form_id, $method, $module, $order);
    }

}