<?php

/**
 * @file
 * Contains hooks for a custom installer theme.
 */

declare(strict_types=1);

/**
 * Implements hook_form_FORM_ID_alter().
 */
function test_installer_theme_form_install_select_language_form_alter(array &$form): void {
  $form['function_name']['#markup'] = 'Added by custom installer theme.';
}