code: public function tokenizePackageInfo()
      {
          $info = explode(':', $this->argument('package'));
  
          return [
              'name'    => $info[0],
              'version' => (count($info) > 1) ? last($info) : null,
          ];
      }
docs: Get the package name and version provided by user.
  
  Note: We will not store package information in Add command instance
  due to possibility of it might be call again in a loop if user
  provided an invalid package ID.
  
  @return array