/**
 * Gets the core extensions.
 *
 * @return  array  Array with core extensions.
 *                 Each extension is an array with following format:
 *                 `type`, `element`, `folder`, `client_id`.
 *
 * @since   3.7.4
 */
public static function getCoreExtensions()
{
    return self::$coreExtensions;
}