Kirby\Cli\Command\Plugin\Install::execute PHP Method

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        parent::execute($input, $output);
        // download and extract the plugin
        $this->fetch();
        // check for an existing plugin with
        // the same name and avoid overwriting it
        if ($this->pluginExists()) {
            if (!$this->confirm('The plugin is already installed. Do you want to update it?')) {
                $this->cleanUp();
                return;
            }
        } else {
            if (!$this->confirm('Do you want to install this plugin?')) {
                $this->cleanUp();
                return;
            }
        }
        try {
            $this->move();
            $this->cleanUp();
        } catch (RuntimeException $e) {
            // make sure to clean up even after errors
            $this->cleanUp();
            throw $e;
        }
    }