config

/**
 * Save the bulk delete action to config.
 */
function redirect_update_8104() {
  if (!Action::load('redirect_delete_action')) {
    $entity_type_manager = \Drupal::entityTypeManager();
    $module_handler = \Drupal::moduleHandler();

    // Save the bulk delete action to config.
    $config_install_path = $module_handler->getModule('redirect')->getPath() . '/' . InstallStorage::CONFIG_INSTALL_DIRECTORY;
    $storage = new FileStorage($config_install_path);
    $entity_type_manager
      ->getStorage('action')
      ->create($storage->read('system.action.redirect_delete_action'))
      ->trustData()
      ->save();
  }
}

drush config:status

drush config:import --diff

drush config:export --diff

public static function getDefaultDate() {
  $end_date = new DrupalDateTime();
  $end_date->setTime(23, 59, 59);
  $timezone = new DateTimeZone('UTC');
  $end_date->setTimezone($timezone);
  return $end_date->format('Y-m-d\TH:i:s');
}

default_value_callback: '\Drupal\my_custom_module\Entity\DefaultDateValue::getDefaultDate'