LEtudiant\Composer\Installer\Config\SharedPackageInstallerConfig::getSymlinkDir PHP Method

    public function getSymlinkDir()
    {
        return $this->symlinkDir;
    }

 /**
  * @param PackageInterface $package
  *
  * @return string
  */
 protected function getPackageVendorSymlink(PackageInterface $package)
 {
     return $this->config->getSymlinkDir() . DIRECTORY_SEPARATOR . $package->getPrettyName();
 }