Scalr\Service\Aws\Ec2\DataType\VolumeFilterNameType::__callStatic PHP Method

    public static function __callStatic($name, $args)
    {
        $class = __CLASS__;
        if ($name == 'tag') {
            if (!isset($args[0])) {
                throw new \InvalidArgumentException(sprintf('Tag name must be provided! Please use %s::tag("symbolic-name")', $class));
            }
            return new $class('tag:' . $args[0]);
        }
        return parent::__callStatic($name, $args);
    }