private function importStaffTeams()
 {
     $table = 'staff_team';
     $items = $this->getStaffTeams();
     DB::table($table)->truncate();
     foreach ($items as $item) {
         if (is_null($item->team_slug)) {
             continue;
         }
         $staff = Staff::withTrashed()->where('slug', '=', $item->staff_slug)->first();
         $team = Team::findBySlug($item->team_slug);
         $staff->teams()->attach($team->id);
     }
 }