public function __construct($config, $output = null)
{
$this->paths = $config;
$this->output = $output;
$this->file = $config['path.packages'] . '/' . $this->file;
$this->blueprint = ['repositories' => [['type' => 'artifact', 'url' => $config['path.artifact']], ['type' => 'composer', 'url' => $config['system.api']]]];
}