public function getInstallPath(PackageInterface $package)
{
$this->initializeVendorDir();
$basePath = $this->vendorDir . DIRECTORY_SEPARATOR . $package->getPrettyName() . DIRECTORY_SEPARATOR . $package->getPrettyVersion();
$targetDir = $package->getTargetDir();
return $basePath . ($targetDir ? '/' . $targetDir : '');
}