code: protected function normalizeAclPresence($data)
      {
          if ($data instanceof AclPresenceInterface) {
  
              $data = [ $data ];
  
          } elseif (is_array($data) && ! Arr::isAssoc($data)) {
  
              $presences = [];
  
              // If presences are just groupless permissions return them as-is
              foreach ($data as $nestedData) {
  
                  if (is_string($nestedData)) {
                      $presences[] = $nestedData;
                  } else {
                      $presences[] = new AclPresence($nestedData);
                  }
              }
  
              $data = $presences;
  
          } else {
  
              $data = [ new AclPresence($data) ];
          }
  
          /** @var AclPresenceInterface[]|string[] $data */
          return $data;
      }
docs: Normalizes menu presence data to an array of AclPresence instances.
  Lists of permission slugs will remain unchanged.
  
  @param mixed $data
  @return AclPresenceInterface[]