private function mergeComposerPsr4($vendor)
    {
        if ($psr4Autoload = $this->findComposerDirectory($vendor, 'autoload_psr4.php')) {
            $this->log->debug('Located autoload_psr4.php file', ['path' => $psr4Autoload]);
            $map = require $psr4Autoload;
            foreach ($map as $namespace => $path) {
                $this->log->debug('Autoloading PSR-4 namespace', ['namespace' => $namespace, 'path' => $path]);
                $this->app->getLoader()->setPsr4($namespace, $path);
            }
        }
    }