Method getInstance

/**
 * Returns the global Toolbar object, only creating it if it doesn't already exist.
 *
 * @param   string  $name  The name of the toolbar.
 *
 * @return  Toolbar  The Toolbar object.
 *
 * @since       1.5
 * @deprecated  5.0 Use the ToolbarFactoryInterface instead
 *
 * @throws \Joomla\DI\Exception\KeyNotFoundException
 */
public static function getInstance($name = 'toolbar')
{
    if (empty(self::$instances[$name])) {
        self::$instances[$name] = Factory::getContainer()->get(ToolbarFactoryInterface::class)->createToolbar($name);
    }
    return self::$instances[$name];
}