private function showCommandHelp(string $controllerClass, string $commandMethod)
    {
        // 反射获取方法描述
        $reflectionClass = new \ReflectionClass($controllerClass);
        $reflectionMethod = $reflectionClass->getMethod($commandMethod);
        $document = $reflectionMethod->getDocComment();
        $document = $this->parseAnnotationVars($document, $this->annotationVars());
        $docs = DocBlockHelper::getTags($document);

        $commands = [];

        // 描述
        if (isset($docs['Description'])) {
            $commands['Description:'] = explode("\n", $docs['Description']);
        }

        // 使用
        if (isset($docs['Usage'])) {
            $commands['Usage:'] = $docs['Usage'];
        }

        // 参数
        if (isset($docs['Arguments'])) {
            // $arguments = $this->parserKeyAndDesc($docs['Arguments']);
            $commands['Arguments:'] = $docs['Arguments'];
        }

        // 选项
        if (isset($docs['Options'])) {
            // $options = $this->parserKeyAndDesc($docs['Options']);
            $commands['Options:'] = $docs['Options'];
        }

        // 实例
        if (isset($docs['Example'])) {
            $commands['Example:'] = [$docs['Example']];
        }

        \output()->writeList($commands);
    }