private function tableSeed()
 {
     $adminCapabilities = Capability::all();
     $userCapabilities = Capability::whereIn('name', ['login', 'logout', 'access_admin_dashboard'])->get();
     $staffCapabilities = Capability::whereIn('name', ['login', 'logout', 'access_admin_dashboard', 'update_user_profile', 'update_user_password'])->get();
     $admins = Role::whereName('admin')->get();
     $staff = Role::whereName('staff')->get();
     $users = Role::whereName('user')->get();
     foreach ($admins as $admin) {
         $admin->capabilities()->sync($adminCapabilities->lists('id'));
     }
     foreach ($staff as $staff) {
         $staff->capabilities()->sync($staffCapabilities->lists('id'));
     }
     foreach ($users as $user) {
         $user->capabilities()->sync($userCapabilities->lists('id'));
     }
 }