getPackageVersion() public method

public getPackageVersion ( $packageName )
 /**
  * Returns the full Symfony version number of the project by getting
  * it from the composer.lock file.
  *
  * @return string The installed Symfony version
  */
 protected function getInstalledSymfonyVersion()
 {
     $symfonyVersion = $this->composerManager->getPackageVersion('symfony/symfony');
     if (!empty($symfonyVersion) && 'v' === substr($symfonyVersion, 0, 1)) {
         return substr($symfonyVersion, 1);
     }
     return $symfonyVersion;
 }