Drupal → Как выполнить свою preprocess функцию до основной

/**
 * Implements hook_theme_registry_alter().
 */
function MODULENAME_theme_registry_alter(&$theme_registry) {
  array_unshift($theme_registry['template_preprocess_views_view_field']['preprocess functions'], 'mytheme_prepreprocess_views_view_field');
}
 
/**
 * Pre-preprocess function for theme_views_view_field().
 */
function mytheme_prepreprocess_views_view_field(&$vars) {
  ...
}