Plugin.php

<?php

namespace Composer\Installers;

use Composer\Composer;
use Composer\IO\IOInterface;
use Composer\Plugin\PluginInterface;
class Plugin implements PluginInterface {
    
    /** @var Installer */
    private $installer;
    public function activate(Composer $composer, IOInterface $io) : void {
        $this->installer = new Installer($io, $composer);
        $composer->getInstallationManager()
            ->addInstaller($this->installer);
    }
    public function deactivate(Composer $composer, IOInterface $io) : void {
        $composer->getInstallationManager()
            ->removeInstaller($this->installer);
    }
    public function uninstall(Composer $composer, IOInterface $io) : void {
    }

}