Phan\Language\Type::__toString PHP 메소드

    public function __toString()
    {
        $string = $this->asFQSENString();
        $template_parameter_string = implode(',', array_map(function (UnionType $type) {
            return (string) $type;
        }, $this->template_parameter_type_list));
        if (!empty($template_parameter_string)) {
            $string .= '<' . $template_parameter_string . '>';
        }
        return $string;
    }