code: public function drush($command, $assumeYes = true)
      {
          if (is_array($command)) {
              $command = implode(' ', array_filter($command));
          }
  
          return $this->exec($this->injectArguments($command, $assumeYes));
      }
docs: Runs the given drush command.
  
  @param string $command
  @param bool $assumeYes
  
  @return $this