public function init() {
    // Get default properties from project.
    $this->alias = $this->getProject()->getProperty('drush.alias');
    $this->root = $this->getProject()->getProperty('drush.root');
    $this->uri = $this->getProject()->getProperty('drush.uri');
    $this->bin = $this->getProject()->getProperty('drush.bin');
    $this->config = $this->getProject()->getProperty('drush.config');
    $this->aliasPath = $this->getProject()->getProperty('drush.alias-path');
    $this->color = $this->getProject()->getProperty('drush.color');
  }