/**
  * Synchronizes data between two issue trackers.
  *
  * @return void
  */
 private function sync()
 {
     $config = new Configuration($this->config);
     $github = new GitHubTracker($config->getGitHubUsername(), $config->getGitHubPassword(), $config->getGitHubProject(), $config->getGitHubOwner());
     $pivotal = new PivotalTracker($config->getPivotalUsername(), $config->getPivotalPassword(), $config->getPivotalProject());
     $sync = new FullSynchronizer();
     $sync->synchronizeBidirectional($github, $pivotal);
 }