private void ParseMetadata(string metadataString)
    {
        string[] metadataTokens = metadataString.Split(METADATA_SEPARATOR);

        foreach (string metadataToken in metadataTokens)
        {
            if (SiteDimensionsMetadata.IsQualified(metadataToken))
            {
                siteDimensionsMetadata = new SiteDimensionsMetadata(metadataToken);
            }
            else if (LandmarkMetadata.IsQualified(metadataToken))
            {
                landmarkMetadataList.Add(new LandmarkMetadata(metadataToken));
            }
            else if (TrafficMetadata.IsQualified(metadataToken))
            {
                trafficMetadataList.Add(new TrafficMetadata(metadataToken));
            }
            else if (RoadMetadata.IsQualified(metadataToken))
            {
                roadMetadataList.Add(new RoadMetadata(metadataToken));
            }
            else
            {
                // Unknown metadata type
                Debug.Log("Error: unknown metadata type");
            }
        }
    }
 public LevelMetadata(SiteDimensionsMetadata siteDimensionsMetadata, List <LandmarkMetadata> landmarkMetadataList,
                      List <TrafficMetadata> trafficMetadataList, List <RoadMetadata> roadMetadataList)
 {
     this.siteDimensionsMetadata = siteDimensionsMetadata;
     this.landmarkMetadataList   = landmarkMetadataList;
     this.trafficMetadataList    = trafficMetadataList;
     this.roadMetadataList       = roadMetadataList;
 }